Sulfuric Acid

1Identification

Name

Sulfuric Acid

IUPAC name

sulfuric acid

CAS number

7664-93-9

EC number

231-639-5

Molecular formula

H2O4S

Molecular weight

98.08 g/mol

InChIKey

QAOWNCQODCNURD-UHFFFAOYSA-N

SMILES

OS(=O)(=O)O

PubChem CID

1118

Synonyms

SULFURIC ACID, Sulphuric acid, Dihydrogen sulfate, Dipping acid, Mattling acid, Battery acid, Acide sulfurique, Electrolyte acid, Acidum sulfuricum, Sulphuricum acidum, Schwefelsaeure, tetraoxosulfuric acid, Acido solforico, Acido sulfurico

Recommended uses

• Used in the fertilizer, petroleum refining, and battery industries; also used in metal cleaning and electroplating; [ACGIH] Used in printing, publishing, and photography shops; [ATSDR ToxFAQs] Used as a wet etchant in semiconductor manufacturing at a standard concentration of 96%; [CSH, p. 46]
  Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
• Acid and Alkali Cleaning of Metals [Category: Clean] Electroplating [Category: Plate] Petroleum Production and Refining [Category: Industry] Semiconductor Manufacturing [Category: Industry] Battery Manufacturing [Category: Industry] Smelting Copper or Lead [Category: Industry] Pulp and Paper Processing [Category: Industry] Leather Tanning and Processing [Category: Industry] Photographic Processing [Category: Other] Fur Dressing and Dyeing [Category: Industry] Textiles (Printing, Dyeing, or Finishing) [Category: Industry] Glass Manufacturing [Category: Industry] Metal Extraction and Refining [Category: Industry]
  Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
• Enameling [Category: Hobbies] Glassblowing [Category: Hobbies] Textile arts [Category: Hobbies]
  Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
• Solvent Intermediates Polymerization promoter Energy Releasers (explosives, motive propellant) Other CBI Leaching agent Alloys Processing aids not otherwise specified Deodorizer Tanning agents not otherwise specified Surfactant (surface active agent) Processing aids, not otherwise listed Plating agent Chemical reaction regulator Bleaching agent Fuel pH regulating agent Absorbent Dehydrating agent (desiccant) Cleaning agent Reducing agent Catalyst Ion exchange agent Crystal growth modifiers (nucleating agents) Corrosion inhibitor Not Known or Reasonably Ascertainable Soil amendments (fertilizers) Solids separation (precipitating) agent, not otherwise specified Chelating agent Etching agent Dr…
  EPA Chemical Data Reporting (CDR)
• Processing aids not otherwise specified Monomers Chemical reaction regulator Plating agent pH regulating agent Energy Releasers (explosives, motive propellant) Other Adhesion/cohesion promoter Etching agent Flocculating agent Solids separation (precipitating) agent, not otherwise specified Intermediate Flotation agent Oxidizing agent Laboratory chemicals Cleaning agent Brightener Dehydrating agent (desiccant) Soil amendments (fertilizers) Corrosion inhibitor Not Known or Reasonably Ascertainable Ion exchange agent Catalyst
  EPA Chemical Data Reporting (CDR)

Use categories: EPA Safer Chemical Functional Use Classes -> Processing Aids and Additives · Safer Chemical Classes -> Yellow triangle - The chemical has met Safer Choice Criteria for its functional ingredient-class, but has some hazard profile issues · Food additives · Fragrance Ingredients

Description

• Sulfuric acid is a colorless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. It will char wood and most other organic matter on contact, but is unlikely to cause a fire. Density 15 lb / gal. Long term exposure to low concentrations or short term exposure to high concentrations can result in adverse health effects from inhalation. It is used to make fertilizers and other chemicals, in petroleum refining, in iron and steel production, and for many other uses. Rate of onset: Immediate Persistence: Hours, days Odor threshold: Source/use/other hazard: Battery/dyes/paper/glue/metals industries; volcanic gas; toxic fumes when heated.
  CAMEO Chemicals
• Sulfuric acid, spent appears as a black oily liquid. Corrosive to metals and tissue. Density 15 lb /gal.
  CAMEO Chemicals
• Sulfuric acid is a sulfur oxoacid that consists of two oxo and two hydroxy groups joined covalently to a central sulfur atom. It has a role as a catalyst. It is a conjugate acid of a hydrogensulfate.
  ChEBI

2Hazard identification

Signal word

Danger

Pictograms

GHS05

Classification source

Regulation (EC) No 1272/2008 of the European Parliament and of the Council

Precautionary statements

Other reported classifications

7 classification records exist across sources. Differences usually reflect purity, physical form or impurities.

NFPA 704 rating

• 3 - Materials that, under emergency conditions, can cause serious or permanent injury.
  Hazardous Substances Data Bank (HSDB)
• 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand.
  Hazardous Substances Data Bank (HSDB)
• 2 - Materials that readily undergo violent chemical changes at elevated temperatures and pressures.
  Hazardous Substances Data Bank (HSDB)

Health hazards

• Corrosive to all body tissues. Inhalation of vapor may cause serious lung damage. Contact with eyes may result in total loss of vision. Skin contact may produce severe necrosis. Fatal amount for adult: between 1 teaspoonful and one-half ounce of the concentrated chemical. Even a few drops may be fatal if the acid gains access to the trachea. Chronic exposure may cause tracheobronchitis, stomatitis, conjunctivitis, and gastritis. Gastric perforation and peritonitis may occur and may be followed by circulatory collapse. Circulatory shock is often the immediate cause of death.
  CAMEO Chemicals
• Contact with eyes or skin causes severe burns, the severity depending on the strength of the acid. Ingestion can cause severe irritation of mouth and stomach. (USCG, 1999)
  CAMEO Chemicals
• · CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. · Fire will produce irritating, corrosive and/or toxic gases. · Reaction with water may generate much heat that will increase the concentration of fumes in the air. · Contact with molten substance may cause severe burns to skin and eyes. · Runoff from fire control or dilution water may cause environmental contamination.
  Emergency Response Guidebook (ERG)

Fire hazards

• It is highly reactive and capable of igniting finely-divided combustible materials on contact. When heated, it emits highly toxic fumes. Avoid heat; water and organic materials. Sulfuric acid is explosive or incompatible with an enormous array of substances. Can undergo violent chemical change at elevated temperatures and pressure. May react violently with water. When heated, it emits highly toxic fumes. Hazardous polymerization may not occur. (EPA, 1998)
  CAMEO Chemicals
• Excerpt from ERG Guide 137 [Substances - Water-Reactive - Corrosive]: EXCEPT FOR ACETIC ANHYDRIDE (UN1715), THAT IS FLAMMABLE, some of these materials may burn, but none ignite readily. May ignite combustibles (wood, paper, oil, clothing, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. Flammable/toxic gases may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. Substance may be transported in a molten form. (ERG, 2024)
  CAMEO Chemicals
• · EXCEPT FOR ACETIC ANHYDRIDE (UN1715), THAT IS FLAMMABLE, some of these materials may burn, but none ignite readily. · May ignite combustibles (wood, paper, oil, clothing, etc.). · Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. · Flammable/toxic gases may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). · Contact with metals may evolve flammable hydrogen gas. · Containers may explode when heated or if contaminated with water. · Substance may be transported in a molten form.
  Emergency Response Guidebook (ERG)

Hazards summary

• 77%-98% acid causes second or third degree burns after short contact; [CHRIS] Solutions <30% are corrosive; solutions >30% are highly corrosive; [Quick CPC] Human carcinogen designation refers to sulfuric acid contained in strong inorganic acid mists. A corrosive substance that can cause pulmonary edema; [ICSC] May cause erosion of teeth enamel; [HSDB] See Strong inorganic acid mists.
  Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

3Composition / information on ingredients

This page describes the pure substance. Commercial products may be solutions or mixtures. Check Section 3 of your supplier's SDS for concentrations and other ingredients.

4First-aid measures

• Caution: Sulfuric acid is extremely corrosive. Caution is advised. Signs and Symptoms of Acute Sulfuric Acid Exposure: Signs and symptoms of acute ingestion of sulfuric acid may be severe and include salivation, intense thirst, difficulty in swallowing, pain, and shock. Oral, esophageal, and stomach burns are common. Vomitus generally has a coffee-ground appearance. The potential for circulatory collapse is high following ingestion of sulfuric acid. Acute inhalation exposure may result in sneezing, hoarseness, choking, laryngitis, dyspnea (shortness of breath), respiratory tract irritation, and chest pain.
  CAMEO Chemicals
• Excerpt from NIOSH Pocket Guide for Sulfuric acid: Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Skin: WATER FLUSH IMMEDIATELY - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly. Breathing: RESPIRATORY SUPPORT - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once.
  CAMEO Chemicals
• General First Aid: · Call 911 or emergency medical service. · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination. · Move victim to fresh air if it can be done safely. · Administer oxygen if breathing is difficult. · If victim is not breathing: -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance. -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).
  Emergency Response Guidebook (ERG)
• (General first aid procedures) Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Skin: Water flush immediately - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly. Breathing: Respiratory support Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately.
  The National Institute for Occupational Safety and Health (NIOSH)

Symptoms of exposure

• Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing.
  ILO-WHO International Chemical Safety Cards (ICSCs)
• Redness. Pain. Blisters. Serious skin burns.
  ILO-WHO International Chemical Safety Cards (ICSCs)
• Redness. Pain. Severe burns.
  ILO-WHO International Chemical Safety Cards (ICSCs)

5Fire-fighting measures

• Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide.
  Hazardous Substances Data Bank (HSDB)
• Advice for firefighters: Wear self-contained breathing apparatus for firefighting if necessary.
  Hazardous Substances Data Bank (HSDB)
• Extinguish fire using agents suitable for nearby fires. Use water spray only to keep fire-exposed containers cool.
  Hazardous Substances Data Bank (HSDB)

Hazardous combustion products

• When heated, it emits highly toxic fumes...
  Hazardous Substances Data Bank (HSDB)

6Accidental release measures

Isolation and evacuation

• Excerpt from ERG Guide 137 [Substances - Water-Reactive - Corrosive]: IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary. FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
  CAMEO Chemicals
• Immediate precautionary measure · Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Spill · For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances. · For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary. Fire · If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.
  Emergency Response Guidebook (ERG)

Spill cleanup

• Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Do NOT absorb in saw-dust or other combustible absorbents. Collect leaking liquid in sealable containers. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. Cautiously neutralize remainder with lime or soda ash.
  ILO-WHO International Chemical Safety Cards (ICSCs)
• SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal.
  Hazardous Substances Data Bank (HSDB)
• ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Wear respiratory protection. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Environmental precautions: Do not let product enter drains. Methods and materials for containment and cleaning up: Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed containers for disposal.
  Hazardous Substances Data Bank (HSDB)
• Consult an expert! Evacuate danger area! Do NOT absorb in saw-dust or other combustible absorbents ... Do NOT let this chemical enter the environment.
  Hazardous Substances Data Bank (HSDB)

7Handling and storage

• Dry. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Store only in original packaging.
  ILO-WHO International Chemical Safety Cards (ICSCs)
• Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.
  Hazardous Substances Data Bank (HSDB)
• Keep tightly closed
  Hazardous Substances Data Bank (HSDB)
• Smoking, open lights, flames, and spark-producing tools shall not be permitted near sulfuric acid carboys, drums, tank cars, or metal storage tanks because of the possible production of explosive mixtures of hydrogen during storage.
  Hazardous Substances Data Bank (HSDB)

8Exposure controls / personal protection

Personal protective equipment

• Excerpt from NIOSH Pocket Guide for Sulfuric acid: Skin: PREVENT SKIN CONTACT - Wear appropriate personal protective clothing to prevent skin contact. Eyes: PREVENT EYE CONTACT - Wear appropriate eye protection to prevent eye contact. Wash skin: WHEN CONTAMINATED - The worker should immediately wash the skin when it becomes contaminated. Remove: WHEN WET OR CONTAMINATED - Work clothing that becomes wet or significantly contaminated should be removed and replaced. Change: No recommendation is made specifying the need for the worker to change clothing after the workshift.
  CAMEO Chemicals
• Eye/face protection: Tightly fitting safety goggles. Faceshield (8-inch minimum). Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
  Hazardous Substances Data Bank (HSDB)
• Skin protection: Handle with gloves.
  Hazardous Substances Data Bank (HSDB)
• Body Protection: Complete suit protecting against chemicals. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
  Hazardous Substances Data Bank (HSDB)

Respirator recommendations

• NIOSH/OSHA Up to 15 mg/m3 : (APF = 25) Any supplied-air respirator operated in a continuous-flow mode (APF = 25) Any powered, air-purifying respirator with acid gas cartridge(s) in combination with a high-efficiency particulate filter (APF = 50) Any chemical cartridge respirator with a full facepiece and acid gas cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.
  The National Institute for Occupational Safety and Health (NIOSH)

9Physical and chemical properties

10Stability and reactivity

Reactivity

• SULFURIC ACID is strongly acidic. Reacts violently with bromine pentafluoride [Mellor 2 Supp. 1:172 1956]. Exploded with para-nitrotoluene at 80 °C [Chem. Eng. News 27:2504]. An explosion occurred when concentrated sulfuric acid was mixed with crystalline potassium permanganate in a vessel containing moisture. Manganese heptoxide was formed, which explodes at 70 °C [Delhez 1967]. A mixture of acrylonitrile with concentrated sulfuric acid must be kept well chilled, otherwise a vigorous exothermic reaction occurs [Chem. Safety Data Sheet SD-31:8. 1949].
  CAMEO Chemicals
• SULFURIC ACID, SPENT is diluted and partly neutralized sulfuric acid recovered from industrial use. Likely to contain multiple impurities. Reacts an an acid and as a weak oxidizing agent. Chars wood and most other organic matter, but is unlikely to cause a fire. Zinc iodide reacts violently with H2SO4. (Pascal, 1962, Vol. 5, 168).
  CAMEO Chemicals
• Reaction with water is negligible unless acid strength is above 80-90% then heat from hydrolysis is extreme, may cause severe burns [Merck, 11th ed. 1989]. During sulfonation of mononitrobenzene by fuming sulfuric acid, a leak from an internal cooling coil permitted water to enter the reaction tank. A violent eruption occurred due to the heat of solution [MCA Case History 944 1963].
  CAMEO Chemicals

Incompatible materials and hazardous reactions

• Incompatible materials: Bases, halides, organic materials, carbides, fulminates, nitrates, picrates, cyanides, chlorates, alkali halides, zinc salts, permanganates, e.g. potassium permanganate, hydrogen peroxide, azides, perchlorates, nitromethane, phosphorous; Reacts violently with: cyclopentadiene, cyclopentanone oxime, nitroaryl amines, hexalithium disilicide, phosphorous(iii) oxide, powdered metals.
  Hazardous Substances Data Bank (HSDB)
• p-Chloronitrobenzene, sulfur trioxide and sulfuric acid: The reaction mixture from sulfonation of the nitro-compound in 20% oleum, containing 35% wt of 2-chloro-5-nitrobenzene-sulfonic acid, shows two exothermic stages at 100 °C, respectively, the latter being violently rapid. The adiabatic reaction mixture, initially at 89 °C, attained 285 °C with boiling after 17 hr. At 180 °C the induction period was about 20 min. Sulfonation of p-chloronitrobenzene with 65% oleum at 46 °C led to a runaway decomposition reaction in a 2000 l vessel. The original process using 20% oleum was less sensitive to heating rate and temperature.
  Hazardous Substances Data Bank (HSDB)
• Addition of sulfuric acid to the cyano-alcohol caused a vigorous reaction which pressure-ruptured. This seems likely to have been due to insufficient cooling to prevent dehydration of the alcohol to methylacrylonitrile and lack of inhibitors to prevent exothermic polymerization of the nitrile.
  Hazardous Substances Data Bank (HSDB)

Chemical stability

• Stable under recommended storage conditions.
  Hazardous Substances Data Bank (HSDB)

11Toxicological information

Target organs

• Eyes, skin, respiratory system, teeth
  The National Institute for Occupational Safety and Health (NIOSH)

Short-term exposure effects

• The substance is very corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Exposure could cause asphyxiation due to swelling in the throat. Inhalation of high concentrations may cause lung oedema, but only after initial corrosive effects on the eyes and the upper respiratory tract have become manifest. Inhalation may cause asthma-like reactions (RADS). Medical observation is indicated.
  ILO-WHO International Chemical Safety Cards (ICSCs)

Long-term exposure effects

• Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged inhalation may cause effects on the lungs. Risk of tooth erosion upon repeated or prolongated exposure to an aerosol of this substance. Mists of this strong inorganic acid are carcinogenic to humans.
  ILO-WHO International Chemical Safety Cards (ICSCs)

12Ecological information

Not available in the public sources we compile. Check Section 12 of the supplier's SDS.

13Disposal considerations

• SRP: Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in air, soil or water; effects on animal, aquatic and plant life; and conformance with environmental and public health regulations. If it is possible or reasonable use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination.
  Hazardous Substances Data Bank (HSDB)
• SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal.
  Hazardous Substances Data Bank (HSDB)
• Product: Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber; Contaminated packaging: Dispose of as unused product.
  Hazardous Substances Data Bank (HSDB)

14Transport information

UN numbers: UN 1830, UN 1832, UN 2796, UN 1715

Shipping name

• UN 1830; Sulfuric acid with more than 51% acid
  Hazardous Substances Data Bank (HSDB)
• UN 1832; Sulfuric acid, spent
  Hazardous Substances Data Bank (HSDB)

DOT hazard class

• Sulfuric acid, fuming with less than 30 percent free sulfur trioxide
  US Code of Federal Regulations, Hazardous Materials, 49 CFR Part 172
• UN1831
  US Code of Federal Regulations, Hazardous Materials, 49 CFR Part 172
• Class 8 Corrosive material (49 eCFR § 173.136)
  US Code of Federal Regulations, Hazardous Materials, 49 CFR Part 172

DOT label

• Corrosive
  CAMEO Chemicals

UN classification

• UN Hazard Class: 8; UN Pack Group: II
  ILO-WHO International Chemical Safety Cards (ICSCs)

Emergency Response Guidebook

• 1832 137
  Emergency Response Guidebook (ERG)
• 2796 157
  Emergency Response Guidebook (ERG)

How DOT hazard classes work →

15Regulatory information

• (a) Residues of sulfuric acid are exempted from the requirement of a tolerance when used in accordance with good agricultural practice when used as a herbicide in the production of garlic and onions, and as a potato vine dessicant in the production of potatoes. (b) Residues of sulfuric acid are exempted from the requirement of a tolerance in cattle, meat; goat, meat; hog, meat; horse, meat; sheep, meat; poultry, fat; poultry, meat; poultry, meat, byproducts; egg; milk;
  Hazardous Substances Data Bank (HSDB)
• Residues of sulfuric acid are exempted from the requirement of a tolerance when used in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops or to raw agricultural commodities after harvest. Use: pH control agent. Limit: Not to exceed 10% of the pesticide formulation; non-aerosol formulations only.
  Hazardous Substances Data Bank (HSDB)
• Sulfuric acid is designated as a hazardous substance under section 311(b)(2)(A) of the Federal Water Pollution Control Act and further regulated by the Clean Water Act Amendments of 1977 and 1978. These regulations apply to discharges of this substance. This designation includes any isomers and hydrates, as well as any solutions and mixtures containing this substance.
  Hazardous Substances Data Bank (HSDB)
• Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 1000 lb or 454 kg. The toll free number of the NRC is (800) 424-8802. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV.D.3.b).
  Hazardous Substances Data Bank (HSDB)
• The ingredient is used as a pH control agent as defined in part 170.3(o)(23) of this chapter and processing aid as defined in part 170.3(o)(24) of this chapter. ... The ingredient is used in food at levels not to exceed good manufacturing practice in accordance with part 184.1(b)(1). Current good manufacturing practice results in a maximum level, as served, of 0.014% for alcoholic beverages as defined in part 170.3(n)(2) of this chapter and 0.0003% for cheeses as defined in part 170.3(n)(5) of this chapter.
  Hazardous Substances Data Bank (HSDB)

Overview of SDS regulations (OSHA HazCom, WHMIS, REACH/CLP) →

16Other information

Compiled from PubChem CID 1118 and the sources it aggregates (attributed inline). Data retrieved 2026-10-12. This summary describes the pure substance and is not a supplier SDS.