Alcohols & Glycols
REACH
Dimethylethylcarbinol
CAS Number
75-85-4
EC Number
200-908-9
Abbreviation
TAA
What is Dimethylethylcarbinol?
Dimethylethylcarbinol (CAS 75-85-4), also known commercially as amylene hydrate and abbreviated as TAA (tert-amyl alcohol), is a tertiary alcohol.
Where is Dimethylethylcarbinol used?
- Plastics and polymer manufacturing: stabilizer and cross-linking agent
- Peroxide-cured systems: improves process consistency and end-product integrity
- Food and beverage: flavoring ingredient contributing characteristic notes at regulated usage levels
- Personal care: solvent and co-solvent aiding ingredient compatibility and viscosity control in topical products
- It also serves as an intermediate in the synthesis of tert-amyl methyl ether.
- This material is also used for other fuel additives.
Good to know: Technical grade is the most common commercial specification, though food-grade and flavor-industry purity standards are also available. Buyers should confirm grade suitability against relevant specifications such as FCC for food and flavoring end uses.
Commercial specifications
- Drum and IBC quantities
- Bulk tanker options for larger volumes
Other Names (Synonyms)
Amylene hydrate|2-methylbutan-2-ol|2-methyl-2-butanol|TAA
What are the physical properties of Dimethylethylcarbinol?
Melting Point -8.8 °C
Boiling Point 102.4 °C @ Press: 760 Torr
Density 0.8096 g/cm³ @ Temp: 20 °C
Flash Point 20 °C
Appearance Amyl alcohols (pentanols) have eight isomers. All are flammable, colorless liquids, except the isomer 2,2- dimethyl-1-propanol, which is a crystalline solid.
Color Clear colorless
Odor pungent
Form Liquid
Water Solubility 120 g/L (20 ºC)
Vapor Pressure 15.5 hPa (20 °C)
Refractive Index n 20/D 1.405(lit.)
pH 6.0 (118g/l, H2O, 20℃)neutral
Log P 0.890
How is Dimethylethylcarbinol classified and handled safely? Learn More
Danger
GHS02· Flammable GHS07· Irritant GHS05· Corrosive GHS08· Health Hazard
Hazard Statements
H225 Highly Flammable liquid and vapor
H302 Harmful if swallowed
H312 Harmful in contact with skin
H315 Causes skin irritation
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Dimethylethylcarbinol?
HS Code 29051500
UN Number 1105
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 1