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DL-Aspartic acid

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DL-Aspartic acid Basic information

Product Name:
DL-Aspartic acid
CAS:
617-45-8
MF:
C4H7NO4
MW:
133.1
EINECS:
210-513-3
Mol File:
617-45-8.mol
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DL-Aspartic acid Chemical Properties

Melting point:
300 °C
alpha 
[α]D20 0±0.3° (c=5, dil. HCl)
Boiling point:
245.59°C (rough estimate)
Density 
1.6622
refractive index 
1.4540 (estimate)
storage temp. 
Store at RT.
solubility 
SOLUBLE
pka
2.28±0.23(Predicted)
form 
Crystalline Low Melting Mass
color 
Yellow
Odor
acid taste
Water Solubility 
SOLUBLE
BRN 
774618
CAS DataBase Reference
617-45-8(CAS DataBase Reference)
NIST Chemistry Reference
Dl-aspartic acid(617-45-8)
EPA Substance Registry System
Aspartic acid (617-45-8)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
20/21/22-36/37/38
Safety Statements 
22-24/25-36-26
WGK Germany 
3
RTECS 
CI9097800
TSCA 
Yes
HS Code 
29224995
Toxicity
LD50 ipr-mus: >6 g/kg KHFZAN 24(5),17,90

MSDS

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DL-Aspartic acid Usage And Synthesis

Chemical Properties

White crystalline powder

Uses

Food additive.

Definition

ChEBI: An alpha-amino acid that consists of succinic acid bearing a single alpha-amino substituent

Hazard

Very low toxicity.

Safety Profile

Very low toxicity byintraperitoneal route. When heated to decompositionemits toxic fumes of NOx.

Purification Methods

Likely impurities are glutamic acid, cystine and asparagine. Crystallise the acid from water by adding 4 volumes of EtOH and dry it at 110o. [Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 p 1856 1961, Beilstein 4 IV 2998, 3000.]

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