Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass


Trimethylamine (TMA) is an organic compound with the formula N(CH3)3. This colorless, hygroscopic, and flammable tertiary amine has a strong "fishy" odor in low concentrations and an ammonia-like odor at higher concentrations. It is a gas at room temperature but is usually sold in pressurized gas cylinders or as a 40% solution in water. TMA is a nitrogenous base and can be readily protonated to give trimethylammonium cation. Wikipedia

Substance Data

Source: TOXNET (HSDB, 24.01.2019)

CAS-Number

75-50-3

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 132

Data from the Hazardous Materials Table

Source: 49 CFR §172 (2018/07)

(3) Hazard Class

3
Flammable liquids

(4) Identification number Help

UN 1297

(5) Packing Group Help

I

(6) Labels Help

Flammable liquids (3) 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.
T11
TP1

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

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail0.5 L
(9B) Cargo aircraft only2.5 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

3
Flammable liquids

(4) Identification number Help

UN 1297

(5) Packing Group Help

II

(6) Labels Help

Flammable liquids (3) 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.
B1
IB2
T7
TP1

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

(8A) Exceptions150see 49 CFR §173.150
(8B) Non-bulk202see 49 CFR §173.202
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail1 L
(9B) Cargo aircraft only5 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard Class

3
Flammable liquids

(4) Identification number Help

UN 1297

(5) Packing Group Help

III

(6) Labels Help

Flammable liquids (3) 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.
B1
IB3
T7
TP1

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

(8A) Exceptions150see 49 CFR §173.150
(8B) Non-bulk203see 49 CFR §173.203
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/rail5 L
(9B) Cargo aircraft only60 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

Comparison View of Different Packing Groups

More than one packing group is indicated for this entry. Criteria for assignment see 49 CFR §173 Subpart D. You can find specific details in the tabs above. Differences are highlighted.

PG I PG II PG III
1
2Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by massTrimethylamine, aqueous solutions with not more than 50 percent trimethylamine by massTrimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass
3333
4UN 1297UN 1297UN 1297
5IIIIII
63, 83, 83, 8
7T11, TP1B1, IB2, T7, TP1B1, IB3, T7, TP1
8ANone150150
8B201202203
8C243243242
9A0.5 L1 L5 L
9B2.5 L5 L60 L
10ADBA
10B40, 13540, 4140, 41

Segregation Chart for Load, Transport, Storage

In this table a statement is contained for each hazard class whether the loading, transport or storage with other hazard classes is allowed, is not permitted or is restricted. The table is based on U.S.-Code 49 CFR §177.848.

red May not be loaded, transported, or stored together in the same transport vehicle or storage facility.
green Load, transport, storage together is not restricted.
yellow Load, transport, storage together is allowed under restrictions.

Substances with similar name

UN-NumberNameHazard Class
UN 2693Bisulfites, aqueous solutions, n.o.s.8
UN 2626Chloric acid aqueous solution, with not more than 10 percent chloric acid5.1
UN 2270Ethylamine, aqueous solution with not less than 50 percent but not more than 70 percent ethylamine3
UN 3293Hydrazine, aqueous solution, with not more than 37 percent hydrazine, by mass6.1
UN 3484Hydrazine aqueous solution, flammable with more than 37% hydrazine, by mass8
UN 2030Hydrazine aqueous solution, with more than 37% hydrazine, by mass8
UN 1613Hydrocyanic acid, aqueous solutions or Hydrogen cyanide, aqueous solutions with not more than 20 percent hydrogen cyanide6.1
UN 2014Hydrogen, peroxide, aqueous solutions with more than 40 percent but not more than 60 percent hydrogen peroxide (stabilized as necessary)5.1
UN 2984Hydrogen, peroxide, aqueous solutions with not less than 8 percent but less than 20 percent hydrogen peroxide (stabilized as necessary)5.1
UN 2015Hydrogen peroxide, stabilized or Hydrogen peroxide aqueous solutions, stabilized with more than 60 percent hydrogen peroxide5.1
Magnesium bisulfite solution, see Bisulfites, aqueous solutions, n.o.s.
UN 1235Methylamine, aqueous solution3
Morpholine, aqueous, mixture, see Corrosive liquids, n.o.s.
UN 3218Nitrates, inorganic, aqueous solution, n.o.s.5.1
UN 3219Nitrites, inorganic, aqueous solution, n.o.s5.1
UN 3211Perchlorates, inorganic, aqueous solution, n.o.s.5.1
UN 3216Persulfates, inorganic, aqueous solution, n.o.s5.1
UN 2427Potassium chlorate, aqueous solution5.1
UN 1686Sodium arsenite, aqueous solutions6.1
UN 2428Sodium chlorate, aqueous solution5.1
UN 1297Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass3