GHS precautionary statement
P403+P233: Store in a well-ventilated place. Keep container tightly closed
- P403+P233
- Storage
- Combined statement
P403+P233 says: “Store in a well-ventilated place. Keep container tightly closed”. It is a storage statement that combines P403, P233. P400 series: how and where to store the product, such as keeping it cool, dry, locked up or in a well-ventilated place.
About the storage group
P400 series: how and where to store the product, such as keeping it cool, dry, locked up or in a well-ventilated place. See all precautionary statements for the full list.
Component statements
A combined statement joins single statements that are printed as one sentence. This one is made of:
Hazards that call for P403+P233
The GHS data recommends P403+P233 for these hazard statements.
| Code | Statement | Hazard class and category | Signal word |
|---|---|---|---|
| H330 | Fatal if inhaled | Acute toxicity, inhalation — Category 1, 2 | Danger |
| H331 | Toxic if inhaled | Acute toxicity, inhalation — Category 3 | Danger |
| H335 | May cause respiratory irritation | Specific target organ toxicity, single exposure; Respiratory tract irritation — Category 3 | Warning |
| H336 | May cause drowsiness or dizziness | Specific target organ toxicity, single exposure; Narcotic effects — Category 3 | Warning |
Chemicals using P403+P233
76 chemicals in our database (showing the first 60 alphabetically). Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
P403+P233 frequently asked questions
What does P403+P233 mean?
P403+P233 says: "Store in a well-ventilated place. Keep container tightly closed". It is a storage precautionary statement in the Storage (P400 series). It combines P403, P233.
Which hazards call for P403+P233?
In the GHS data, P403+P233 is recommended for hazard statements H330, H331, H335, H336.
What type of statement is P403+P233?
P403+P233 is in the Storage (P400 series). P400 series: how and where to store the product, such as keeping it cool, dry, locked up or in a well-ventilated place.
Precautionary statements are general recommendations. Follow the specific instructions on your product's label and safety data sheet.
https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)