Solvents
REACH
Butyl lactate
CAS Number
138-22-7
EC Number
205-316-4
FEMA Number
FEMA 2205
What is Butyl lactate?
Butyl lactate (CAS 138-22-7), also known by its FEMA 2205 designation, is a slow-evaporating ester solvent derived from lactic acid.
Where is Butyl lactate used?
- Coatings, inks and polymer processing: dissolves resins, nitrocellulose and cellulose acetate butyrate where controlled evaporation rate and film quality are critical
- Personal care: carrier solvent in nail care products, fragrances and skin formulations
- Flavoring agent contributing buttery, creamy top notes to dairy analogs, baked goods and confectionery
- It also functions as a plasticizer and coalescing agent.
Good to know: Combines strong solvency with low toxicity, making it a preferred alternative to conventional petrochemical solvents in formulations requiring a more favorable regulatory and environmental profile.
Commercial specifications
- Clear liquid in drum and IBC quantities, with bulk tanker options
- Technical grade for solvents
- Food and flavor grades meeting specific purity specifications
- Kosher and natural-origin certified material from select producers
Other Names (Synonyms)
n-butyl lactate|butyl ester of lactic acid|butyl ester of 2-hydroxypropanoic acid|butyl 2-hydroxypropanoate|Propanoic acid, 2-hydroxy-, butyl ester|Lactic acid, butyl ester|2-Hydroxypropanoic acid butyl ester|Butylester kyseliny mlecne
What are the physical properties of Butyl lactate?
Melting Point -28 °C
Boiling Point 186 °C
Density 0.9815 g/cm³ @ Temp: 20 °C; Press: 759.8 Torr
Flash Point 157 °F
Appearance CLEAR COLOURLESS LIQUID
Color Clear colorless
Odor at 100.00 %. green fruity apple kiwi melon rind lactonic waxy winey apple skin soapy
Form Liquid
Water Solubility 42 g/L (25 ºC)
Vapor Pressure 0.4 mm Hg ( 20 °C)
Refractive Index n 20/D 1.421(lit.)
Log P 0.88
How is Butyl lactate classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant
Hazard Statements
H227 Combustible liquid
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H336 May cause drowsiness or dizziness
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
Which trade and regulatory codes apply to Butyl lactate?
HS Code 29155090
Storage Class 10 - Combustible liquids
WGK (Germany) 2