HazMat Tool — substance information

5-Mercaptotetrazol-1-acetic acid

HMT May 2026
UN / ID
UN 0448
Hazard class
1.4C
Packing group
n/a (multiple — see tabs)
ERG guide
Special provisions
Source
49 CFR §172 (2026/05)

Spot an error in this entry?

5-Mercaptotetrazol-1-acetic acid

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0448

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0351

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(1) Symbols Help


This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).

(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.
101

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0338

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0339

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0278

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) Bulk62see 49 CFR §173.62

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0276

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

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.
110

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) Bulk62see 49 CFR §173.62

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0379

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

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.
50

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0446

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0491

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

NA 0276

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(1) Symbols Help


This entry is signed with "D". The letter "D" identifies proper shipping names which are appropriate for describing materials for domestic transportation but may be inappropriate for international transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate proper shipping name may be selected when either domestic or international transportation is involved.

(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.
51

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0509

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

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.
16

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

(8A) Exceptions171see 49 CFR §173.171
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0510

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

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.
109

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) Bulk62see 49 CFR §173.62

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0438

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) Bulk62see 49 CFR §173.62

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0479

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(1) Symbols Help


This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).

(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.
101

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0407

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

1.4
Explosives

(4) Identification number Help

UN 0501

(5) Packing Group Help

n/a

(6) Labels Help

Explosives (1.4C)

Compatibility group of explosives - Description of substances or article to be classified

Group: C

Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance.

Source: 49 CFR §173.52

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102) Help

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

(8A) ExceptionsNone
(8B) Non-bulk62see 49 CFR §173.62
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only75 kg

(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 n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a PG n/a
1GDG
25-Mercaptotetrazol-1-acetic acidArticles, explosive, n.o.s.Cartridges for weapons, blank or Cartridges, small arms, blankCartridges for weapons, inert projectile or Cartridges, small armsCartridges, oil wellCartridges, power deviceCases, cartridges, empty with primerCases, combustible, empty, without primerCharges, propellingModel rocket motorPowder, smokelessRocket motorsRockets, with expelling chargeSubstances, explosive, n.o.s.Tetrazol-1-acetic acidPropellant, solid
31.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C
4UN 0448UN 0351UN 0338UN 0339UN 0278UN 0276UN 0379UN 0446UN 0491NA 0276UN 0509UN 0510UN 0438UN 0479UN 0407UN 0501
5 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
61.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C1.4C
7 n/a101 n/a n/a n/a11050 n/a n/a5116109 n/a101 n/a n/a
8ANoneNoneNoneNoneNoneNoneNoneNoneNoneNone171NoneNoneNoneNoneNone
8B62626262626262626262626262626262
8CNoneNoneNoneNone6262NoneNoneNoneNoneNone6262NoneNoneNone
9AForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbiddenForbidden
9B75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg75 kg
10A02020202020202020202020202020202
10B25252525252525252525252525252525

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.

Similar substances

UN / IDProper shipping nameHazard class
UN 0495Propellant, liquid1.3C
UN 0497Propellant, liquid1.1C