HazMat Tool — substance information

Nitric acid other than red fuming, with more than 70 percent nitric acid

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 2031
Hazard class
8
Packing group
I (multiple — see tabs)
ERG guide
ERG 157
Special provisions
SP B47, SP B53, SP T10, SP TP2, SP TP12, SP TP13
Source
49 CFR §172 (15 June 2026)

Spot an error in this entry?

Nitric acid other than red fuming, with more than 70 percent nitric acid

Substance Data

Source: PubChem (HSDB, 09.12.2019)

CAS-Number

7697-37-2

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 157

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2031

(5) Packing Group Help

I

(6) Labels Help

Corrosive liquids (8) Oxidizers (5.1) Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
B47
B53
T10
TP2
TP12
TP13

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk158see 49 CFR §173.158
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only2.5 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2031

(5) Packing Group Help

II

(6) Labels Help

Corrosive liquids (8)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
B2
B47
B53
IB2
T8
TP2

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions154see 49 CFR §173.154
(8B) Non-bulk158see 49 CFR §173.158
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/rail1 L
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2031

(5) Packing Group Help

II

(6) Labels Help

Corrosive liquids (8) Oxidizers (5.1) Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
B2
B47
B53
IB2
IP15
T8
TP2

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions154see 49 CFR §173.154
(8B) Non-bulk158see 49 CFR §173.158
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2031

(5) Packing Group Help

II

(6) Labels Help

Corrosive liquids (8) Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
A212
B2
B47
B53
IB2
IP15
T8
TP2

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions154see 49 CFR §173.154
(8B) Non-bulk158see 49 CFR §173.158
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

Packing group comparison

Multiple packing groups apply to this entry. See assignment criteria in 49 CFR §173 Subpart D. Details are in the tabs above; differences are highlighted.

PG I PG II PG II PG II
1
2Nitric acid other than red fuming, with more than 70 percent nitric acidNitric acid other than red fuming with not more than 20 percent nitric acidNitric acid other than red fuming, with at least 65 percent, but not more than 70 percent nitric acidNitric acid other than red fuming, with more than 20 percent and less than 65 percent nitric acid
38888
4UN 2031UN 2031UN 2031UN 2031
5IIIIIII
68, 5.188, 5.18
7B47, B53, T10, TP2, TP12, TP13B2, B47, B53, IB2, T8, TP2B2, B47, B53, IB2, IP15, T8, TP2A212, B2, B47, B53, IB2, IP15, T8, TP2
8ANone154154154
8B158158158158
8C243242242242
9AForbidden1 LForbiddenForbidden
9B2.5 L30 L30 L30 L
10ADDDD
10B44, 53, 58, 66, 89, 90, 110, 11153, 5853, 58, 66, 74, 89, 9044, 66, 53, 58, 74, 89, 90

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.