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L-Aspartic acid  Structure

L-Aspartic acid

Chemical Properties

Melting point >300 °C (dec.)(lit.)
alpha  25 º (c=8, 6N HCl)
Boiling point 245.59°C (rough estimate)
Density  1.66
refractive index  1.4540 (estimate)
FEMA  3656 | L-ASPARTIC ACID
storage temp.  Store below +30°C.
solubility  H2O: 5 mg/mL
form  powder
pka 1.99(at 25℃)
color  White
PH 2.5-3.5 (4g/l, H2O, 20℃)
Odor acid taste
Odor Type odorless
optical activity [α]20/D +24.7±1°, c = 5% in 5 M HCl
Water Solubility  5 g/L (25 ºC)
λmax λ: 260 nm Amax: 0.20
λ: 280 nm Amax: 0.10
JECFA Number 1429
Merck  14,840
BRN  1723530
Stability Stable. Combustible. Incompatible with strong oxidising agents.
InChIKey CKLJMWTZIZZHCS-REOHCLBHSA-N
LogP -0.67
Substances Added to Food (formerly EAFUS) L-ASPARTIC ACID
FDA 21 CFR 172.320
CAS DataBase Reference 56-84-8(CAS DataBase Reference)
FDA UNII 30KYC7MIAI
NIST Chemistry Reference Aspartic acid(56-84-8)
EPA Substance Registry System Aspartic acid (56-84-8)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H302
Precautionary statements P264-P270-P301+P312-P501
Hazard Codes  Xi,Xn
Risk Statements  36-36/37/38-20/21/22
Safety Statements  26-24/25-22-36
WGK Germany  2
RTECS  CI9098500
10
TSCA  Yes
HazardClass  IRRITANT
HS Code  29224995
Hazardous Substances Data 56-84-8(Hazardous Substances Data)
Toxicity LD50 intraperitoneal in mouse: 6gm/kg
NFPA 704:
1
1 0

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L-Aspartic acid Chemical Properties,Usage,Production

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