UN 2031

UN 2031 is the transport identification number used for Nitric Acid and Calcium Oxide in our database. It appears in Section 14 of the SDS, on shipping papers and on hazmat placards and labels.

Proper shipping name

• UN 2031; Nitric acid other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid; Nitric acid other than red fuming, with more than 20 percent and less than 65 percent nitric acid; Nitric acid other than red fuming with not more than 20 percent nitric acid; Nitric acid other than red fuming, with more than 70 percent nitric acid

DOT hazard classification

• Nitric acid, red fuming
• UN2032
• Class 8 Corrosive material (49 eCFR § 173.136)

Emergency Response Guidebook

• 2031 157(other than red fuming)

Transport data from NOAA CAMEO Chemicals, HSDB and other sources via PubChem. Always confirm against 49 CFR 172.101 and the current ERG.