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Butyl lactate

Basic information Description References Safety Related Supplier

Butyl lactate Basic information

Product Name:
Butyl lactate
CAS:
138-22-7
MF:
C7H14O3
MW:
146.18
EINECS:
205-316-4
Mol File:
138-22-7.mol
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Butyl lactate Chemical Properties

Melting point:
−28 °C(lit.)
Boiling point:
185-187 °C(lit.)
Density 
0.984 g/mL at 25 °C(lit.)
vapor density 
5.04 (vs air)
vapor pressure 
0.4 mm Hg ( 20 °C)
refractive index 
n20/D 1.421(lit.)
FEMA 
2205 | BUTYL LACTATE
Flash point:
157 °F
form 
Liquid
pka
13.06±0.20(Predicted)
color 
Clear colorless
Water Solubility 
42 g/L (25 ºC)
JECFA Number
932
CAS DataBase Reference
138-22-7(CAS DataBase Reference)
NIST Chemistry Reference
Propanoic acid, 2-hydroxy-, butyl ester(138-22-7)
EPA Substance Registry System
n-Butyl lactate (138-22-7)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
2
RTECS 
OD4025000
HS Code 
29155090

MSDS

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Butyl lactate Usage And Synthesis

Description

Butyl lactate is a kind of lactate derived ester. As a kind of alpha-hydroxy acid ester, its applications in cosmetic, food and pharmaceutical formulations have significantly increased due to their hygroscopic, emulsifying and exfoliating properties. It is used as a food additive because of its flavoring effect. In industry, it can be used as solvent and chemical feedstock. As a bio-based solvent, it can be used as extractant for removing 1-butanol from the aqueous fermentation broths. It can be generally manufactured through the action of lipase from various origins.

References

[1]Zheng, Shaohua, et al. "Feasibility of bio-based lactate esters as extractant for biobutanol recovery:(Liquid+ liquid) equilibria." The Journal of Chemical Thermodynamics 93 (2016): 127-131.
[2]Pirozzi, Domenico, and Guido Greco. "Activity and stability of lipases in the synthesis of butyl lactate." Enzyme and microbial technology 34.2 (2004): 94-100.
[3]Koutinas, Athanasios, et al. "Economic evaluation of technology for a new generation biofuel production using wastes." Bioresource technology 200 (2016): 178-185.

Chemical Properties

CLEAR COLOURLESS LIQUID

Chemical Properties

Butyl lactate has a faintly sweet, pleasant odor with buttery, creamy, milky, sweet, mushroom undertones. Two optically active and one racemic form of butyl lactate are known.

Occurrence

Reported found in cognac, cider and white wine.

Uses

n-Butyl lactate is used as a food and feed additive.

Uses

Solvent for nitrocellulose, ethyl cellulose, oils, dyes, natural gums, many synthetic polymers, lac- quers, varnishes, inks, stencil pastes, antiskin- ning agent, chemical (intermediate), perfumes, dry- cleaning fluids, adhesives.

Preparation

The racemic d-form is prepared by reacting zinc ammonium l-lactate with n-butyl alcohol in the presence of concentrated H2SO4; the l-form is prepared by reacting zinc ammonium d-lactate with n-butyl alcohol in the presence of HCl; the racemic form is prepared by several methods, one being from calcium or sodium lactate and n-butyl alcohol in benzene in the presence of H2SO4, with subsequent azeotropic distillation of the mixture.

Production Methods

n-Butyl lactate may be prepared via esterification of lactic acid and n-butyl alcohol.

Taste threshold values

Taste characteristic at 100 ppm: harsh and sulfuraceous with fruit notes.

General Description

A clear colorless liquid with a mild odor. Flash point 168°F. Less dense than water and insoluble in water. Vapors heavier than air. Used as a solvent, and to make other chemicals.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Butyl lactate is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Avoid contact with strong oxidizing agents and strong bases. Will not polymerize [USCG, 1999].

Hazard

Toxic. Upper respiratory tract irritant.

Health Hazard

VAPOR: Headache, coughing, possible sleepiness, nausea or vomiting, or dizziness may result. LIQUID: Irritating to skin and eyes.

Safety Profile

Poison by intraperitoneal route. A skin irritant. Toxic concentration in air for humans is about 4 ppm. Flammable when exposed to heat or flame; can react with oxidizing materials. To fight fire, use alcohol foam, foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS, n-BUTYL ALCOHOL, and LACTIC ACID.

Potential Exposure

Butyl lactate is a liquid. Molecular weight 5 146.19; boiling point 5 170C @ 760 mmHg; freezing/melting point 5 243C; flash point 5 71C(oc). Autoignition temperature 5 340382C. Hazard identification (based on NFPA-704 M Rating System): Health 1; flammability 2; reactivity 0 ?. Slightly soluble in water.

Shipping

A UN1993 Flammable liquids, n.o.s., Hazard Class: 3; Labels: 3—Flammable liquid, Technical Name Required.

Incompatibilities

May form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Butyl lactate Preparation Products And Raw materials

Preparation Products

Raw materials

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Butyl lactateSupplierMore

Henan xiangduo industry co., ltd Gold
Tel:
Email:
2933561707@qq.com;2933561707@qq.com
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Email:
Sales-CN@TCIchemicals.com
BeiJing Hwrk Chemicals Limted
Tel:
010-57411839-
Email:
bjsales@hwrkchemical.com
Basic information Description References Safety Related Supplier