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L(+)-Lactic acid

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L(+)-Lactic acid Basic information

Product Name:
L(+)-Lactic acid
CAS:
79-33-4
MF:
C3H6O3
MW:
90.08
EINECS:
201-196-2
Mol File:
79-33-4.mol
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L(+)-Lactic acid Chemical Properties

Melting point:
52-54°C
alpha 
-13.5 º (c=2.5, 1.5N NaOH)
Boiling point:
125 °C
Density 
1.206 g/mL at 25 °C
FEMA 
2611 | LACTIC ACID
refractive index 
n20/D 1.427
Flash point:
>230 °F
storage temp. 
2-8°C
solubility 
H2O: 10 mg/mL, clear, colorless
pka
pK at 25°, 3.79
form 
Powder/Solid
color 
White
optical activity
[α]20/D 13.5°, c = 2.5 in 1.5 M NaOH
Water Solubility 
SOLUBLE
Sensitive 
Hygroscopic
Merck 
14,5337
JECFA Number
930
BRN 
1720251
InChIKey
JVTAAEKCZFNVCJ-REOHCLBHSA-N
CAS DataBase Reference
79-33-4(CAS DataBase Reference)
NIST Chemistry Reference
(s)-2-Hydroxypropanoic acid(79-33-4)
EPA Substance Registry System
L-Lactic acid (79-33-4)
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Safety Information

Hazard Codes 
Xi,C
Risk Statements 
38-41-34-36/37/38-36-35
Safety Statements 
26-39-45-36/37/39-36
RIDADR 
3261
WGK Germany 
1
RTECS 
OD2800000
3-10
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29181100
Toxicity
LD50 intraperitoneal in mouse: 3194mg/kg

MSDS

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L(+)-Lactic acid Usage And Synthesis

Chemical Properties

Crystalline Solid

Uses

Occurs in small quantities in the blood and muscle fluid of man and animals. The lactic acid concentration increases in muscle and blood after vigorous activity. L-(+)-Lactic acid is also present in liver, kidney, thymus gland, human amniotic fluid, and o

Definition

ChEBI: An optically active form of lactic acid having (S)-configuration.

Purification Methods

Purify lactic acid by fractional distillation at 0.1mm pressure, followed by fractional crystallisation from diethyl ether/isopropyl ether (1:1, dried with sodium). [Borsook et al. J Biol Chem 102 449 1933.] The solvent mixture, *benzene/diethyl ether (1:1) containing 5% pet ether (b 60-80o) has also been used. [Brin Biochemical Preparations 3 61 1953, Beilstein 3 IV 633.]

L(+)-Lactic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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L(+)-Lactic acidSupplierMore

Shanghai Kanglang Biotechnology Co., Ltd. Gold
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Henan xiangduo industry co., ltd Gold
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J & K SCIENTIFIC LTD.
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3B Pharmachem (Wuhan) International Co.,Ltd.
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821-50328103-801
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3bsc@sina.com
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