Triisopropanolamine

  • 1,1’,1’’-Nitrilotripropan-2-ol
  • Tri-2-propanolamine
  • tris(2-Hydroxypropyl)amine
Formula
N[CH2CH(OH)CH3]3
Structure
Description
White, crystalline solid, hygroscopic.
Uses
Emulsifying agents; used in cyanide-free zinc plating; used in rubber industry; filled terpolymer elastomer is made translucent by adding triisopropanolamine; used for chain termination of rubber polymers.

Registry Numbers and Inventories.
CAS
122-20-3
EC (EINECS/ELINCS)
204-528-4
EC Index Number
603-097-00-3
EC Class
Irritant; Dangerous for the Environment
R 36 52/53
RTECS
UB8750000
RTECS class
Primary Irritant
UN (DOT)
3259
Beilstein/Gmelin
1071570
Beilstein Reference
4-04-00-01680
EPA OPP
4209
Swiss Giftliste 1
G-3004
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H21NO3
Formula mass
191.27
Melting point, °C
50
Boiling point, °C
305
Vapor pressure, mmHg
0.7
Vapor density (air=1)
6.6
Saturation Concentration
Less than 13 ppm (0.001%) at 20 C (calculated)
Density
1.02 g/cm3
Solubility in water
Soluble
Viscosity
138 mPas 60 C
Refractive index
1.4477 (75 C)
pKa/pKb
5.94 (pKb)

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
Handling
Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Moisture, strong oxidizing agents, strong acids.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, cyanides.

Fire.
Flash Point,°C
160
Autoignition, °C
275
Upper exp. limit, %
5.8
Lower exp. limit, %
0.8
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire. Cool containers with flooding quantities of water until well after fire is out. In case of fire, use alcohol foam, foam, or dry chemical.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Toxic fumes containing carbon monoxide, and/or carbon dioxide, and oxides of nitrogen. fumes containing carbon monoxide, and/or carbon dioxide, and oxides of nitrogen.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Expected to be a low ingestion hazard.
   Inhalation
May cause respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
   Skin
Causes skin irritation.
   Eyes
Causes severe eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
3259
Response guide
Hazard class
8
Packing Group
I; II; III
 
USCG CHRIS Code
TIP
 
HS Code
2922 19 80
 
IMO Chemical Code
18
IMO Pollution Category
III