2-(Hydroxymethyl)-2-methyl-1,3-propanediol

  • 2,2-Bis(hydroxymethyl)-1-propanol
  • 2,2-Di(hydroxymethyl)propanol
  • 1,1,1-Tris(hydroxymethyl)ethane
  • Methyltrimethylolmethane
  • Methriol
Formula
CH3C(CH2OH)3
Structure
Description
White crystals.
Uses
Major uses include conditioning agent, manufacture of varnishes, alkylated and polyester resins, synthetic drying oils, chemical intermediate for polyesters for polyurethane foams, chemical intermediate for polyesters for alkylated surface coatings, chemical intermediate for polyesters for lubricants and hydraulic fluids, chemical intermediate for trimethylolethane pelargonate, chemical intermediate for its ester derivs, eg, for use in cosmetics, heat stabilizer for polyvinyl chloride resins.

Registry Numbers and Inventories.
CAS
77-85-0
EC (EINECS/ELINCS)
201-063-9
S 22 24/25
RTECS
TY7137500
RTECS class
Other
Beilstein/Gmelin
1304452
Beilstein Reference
4-01-00-02780
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H12O3
Formula mass
120.15
Boiling point, °C
287
Vapor pressure, mmHg
0.0003 (25 C)
Solubility in water
Very soluble
Partition coefficient, pKow
-1.38
Heat of fusion
4.80 kJ/mol
Heat of vaporization
61.0 kJ/mol

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
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Do not allow contact with water. Keep from contact with moist air and steam.
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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
146
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 agent most appropriate to extinguish fire. Do NOT get water inside containers. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation. The toxicological properties of this material have not been fully investigated.
   Eyes
May cause eye irritation. The toxicological properties of this material have not been fully investigated.

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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2905 49 10