HazMat Tool — substance information

Tear gas substance, solid, n.o.s

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 3448
Hazard class
6.1
Packing group
I (multiple — see tabs)
ERG guide
ERG 159
Special provisions
SP T6, SP TP33, SP W31
Source
49 CFR §172 (15 June 2026)

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Tear gas substance, solid, n.o.s


Tear, tears or tearing may refer to: Tearing, the act of breaking apart a material by force Tears, a clear liquid secreted by the tear gland in the eyes of land mammals Wikipedia

Emergency Response Guide No. 159

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 3448

(5) Packing Group Help

I

(6) Labels Help

Poisonous liquids PG I Zone A (6.1)

(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.
T6
TP33
W31

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

(8A) ExceptionsNone
(8B) Non-bulk211see 49 CFR §173.211
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

6.1
Poisonous Material

(4) Identification number Help

UN 3448

(5) Packing Group Help

II

(6) Labels Help

Poisonous liquids PG I Zone A (6.1) 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.
IB8
IP2
IP4
T3
TP33
W31

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

(8A) ExceptionsNone
(8B) Non-bulk212see 49 CFR §173.212
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only25 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 I PG II
1GG
2Tear gas substance, solid, n.o.sTear gas substance, solid, n.o.s
36.16.1
4UN 3448UN 3448
5III
66.16.1
7T6, TP33, W31IB8, IP2, IP4, T3, TP33, W31
8ANoneNone
8B211212
8C242242
9AForbiddenForbidden
9BForbidden25 kg
10ADD
10B4040

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.

Scope & sources (important)Click to show CFR references

This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):

  • §177.834 - General requirements
  • §177.835 - Class 1 materials
  • §177.837 - Class 3 materials
  • §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
  • §177.839 - Class 8 (corrosive) materials
  • §177.840 - Class 2 (gases) materials
  • §177.841 - Division 6.1 and Division 2.3 materials
  • §177.842 - Class 7 (radioactive) material
  • §177.843 - Contamination of vehicles

Similar substances

UN / IDProper shipping nameHazard class
UN 0222Ammonium nitrate, with more than 0.2 percent combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance1.1D
UN 1942Ammonium nitrate, with not more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance5.1
UN 3477Fuel cell cartridges or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing corrosive substances8
UN 3476Fuel cell cartridges or Fuel cell cartridges contained in equipment or Fuel cell cartridges packed with equipment, containing water-reactive substances4.3
UN 3543Articles containing a substance which in contact with water emits flammable gases, n.o.s.4.3
Formaldehyde solutions (with not less than 10% and less than 25% formaldehyde), see Aviation regulated liquid, n.o.s. or Other regulated substances, liquid, n.o.s.
UN 0341Nitrocellulose, unmodified or plasticized with less than 18 percent plasticizing substance, by mass1.1D
UN 0343Nitrocellulose, plasticized with not less than 18 percent plasticizing substance, by mass1.3C
NA 1693Tear gas devices with more than 2 percent tear gas substances, by mass6.1
UN 3542Articles containing a substance liable to spontaneous combustion, n.o.s.4.2
UN 0482Substances, explosive, very insensitive, n.o.s. or Substances, EVI, n.o.s.1.5D
UN 3533Polymerizing substance, solid, temperature controlled, n.o.s.4.1
UN 2900Infectious substances, affecting animals only6.2
UN 3534Polymerizing substance, liquid, temperature controlled, n.o.s.4.1
UN 3077Environmentally hazardous substance, solid, n.o.s.9