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Cas Database

Name	Butyl lactate	EINECS	205-316-4
CAS No.	138-22-7	Density	1.005 g/cm³
PSA	46.53000	LogP	0.71050
Solubility	42 g/L (25 °C) in water	Melting Point	-43 °C
Formula	C₇H₁₄O₃	Boiling Point	189.4 °C at 760 mmHg
Molecular Weight	146.186	Flash Point	71 °C
Transport Information	N/A	Appearance	clear colorless liquid
Safety	26-36-37/39	Risk Codes	36/37/38
Molecular Structure		Hazard Symbols	Xi
Synonyms	NSC 6533;n-Butyl lactate;a-Hydroxypropionicacid butyl ester;Lacticacid, butyl ester (6CI,7CI,8CI);(?à)-n-Butyl lactate;2-Hydroxypropanoic acid butyl ester;Butyl2-hydroxypropanoate;Butyl 2-hydroxypropionate;Butyl a-hydroxypropionate;	Article Data	55

Butyl lactate Synthetic route

: 71-36-3
butan-1-ol

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
stannous octoate; Nafion-H at 145℃; for 7h; Product distribution / selectivity;	99.5%
With sulfuric acid

: 849585-22-4
LACTIC ACID

: 71-36-3
butan-1-ol

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
With dichromic acid at 105 - 110℃; for 3h; Green chemistry; Large scale;	99%
With 3H(1+)O40SiW12(4-)C21H22O3PS(1+) Reflux; Dean-Stark;	96.5%
iodine for 20h; Heating;	95%

: 515-98-0
Ammonium lactate

: 71-36-3
butan-1-ol

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
With toluene-4-sulfonic acid at 120℃; under 760.051 Torr; for 12h; Time;	98%
for 6h; Dean-Stark; Reflux;	46 %Chromat.
With tin(II) oxide In 5,5-dimethyl-1,3-cyclohexadiene; water at 120℃; Reagent/catalyst; Dean-Stark;

: 109-65-9
1-bromo-butane

: 849585-22-4
LACTIC ACID

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
Stage #1: LACTIC ACID With potassium carbonate In water at 20 - 90℃; for 1h; Stage #2: 1-bromo-butane at 20 - 40℃; for 8h; Reagent/catalyst; Temperature;	97.5%

: 849585-22-4
LACTIC ACID

: 71-36-3
butan-1-ol

A: 13544-80-4
2-lactoyloxy-propionic acid butyl ester

B: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
aluminium(III) triflate In iso-tridecanol; di-isopropyl ether; water at 66 - 120℃; under 150.015 - 7500.75 Torr; for 6h; Conversion of starting material;	A 4% B 95%

: 2-(Tetrahydro-pyran-2-yloxy)-propionic acid butyl ester

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
With dibromotriphenylphosphorane In dichloromethane at -50℃; for 3h;	94%

: 62147-49-3
1,3-dihydroxyacetone dimer

: 71-36-3
butan-1-ol

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
With tin (IV) chloride pentahydrate at 110℃; for 6h;	88.4%

: 97-64-3, 2676-33-7
ethyl 2-hydroxypropionate

: 71-36-3
butan-1-ol

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
aluminium(III) triflate at 120 - 140℃; under 37.5038 - 7500.75 Torr; for 1.5 - 6h; Conversion of starting material;	70.9%
zirconium(IV) triflate at 120 - 140℃; under 37.5038 - 7500.75 Torr; for 1 - 6h; Conversion of starting material;	46.6%

: 57-50-1
Sucrose

: 71-36-3
butan-1-ol

A: 138-22-7
n-butyl lactate

B: butyl (D,L)-2-hydroxy-3-butenoate

Conditions

Conditions	Yield
Sn-BEA at 160℃; under 15001.5 Torr; Inert atmosphere of argon;	A 26% B 8%
Sn-BEA at 160℃; for 20h; Inert atmosphere; autoclave;	A 26% B 8%

: 849585-22-4
LACTIC ACID

: 138-22-7
n-butyl lactate

Conditions

Conditions	Yield
at 100 - 120℃; unter vermindertem Druck; man kocht 25 Stdn. mit Butylalkohol;

Butyl lactate Chemical Properties

Molecular Formula: C₇H₁₄O₃
Molecular Weight: 146.18
EINECS: 205-316-4
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)
Refractive index: n20/D 1.421(lit.)
Flash point: 157 °F
Water Solubility: 42 g/L (25 °C)
n-Butyl lactate's(138-22-7) Synonyms: BUTYL LACTATE;1-hydroxyethanecarboxylicacid,butylester;2-Hydroxypropanoic acid butyl ester;2-hydroxy-propanoicacibutylester;2-hydroxypropanoicacid,butylester;2-hydroxy-propanoicacidbutylester;2-hydroxypropionicacid,butylester;2-hydroxy-propionicacidbutylester
n-Butyl lactate's(138-22-7) structural formula:

Butyl lactate Uses

n-Butyl lactate(138-22-7) can be used as food and feed additive.

Butyl lactate Toxicity Data With Reference

1.	skn-rbt 500 mg/24H MOD	FCTXAV Food and Cosmetics Toxicology. 17 (1979),727.
2.	scu-rat LD50:12 g/kg	NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. 1 (1974),15.
3.	ipr-mus LDLo:200 mg/kg	CBCCT* “Summary Tables of Biological Tests“ National Research Council Chemical-Biological Coordination Center. 7 (1955),690.
4.	scu-mus LD50:11,000 mg/kg	FCTXAV Food and Cosmetics Toxicology. 17 (1979),727.

Butyl lactate Consensus Reports

Reported in EPA TSCA Inventory.

Butyl lactate 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 ACIDLACTIC ACID.

Safety Information for n-Butyl lactate(138-22-7)
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36-37/39
WGK Germany 2
RTECS OD4025000

Butyl lactate Standards and Recommendations

OSHA PEL: TWA 5 ppm
ACGIH TLV: TWA 5 ppm

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