Basic information
- Name:
L-Alanine
- CAS No.:
56-41-7
- Molecular Structure:
- Formula:
- C3H7NO2
- Molecular Weight:
- 89.09
- Deleted CAS:
- 6898-94-8
- Synonyms:
- L-.alpha.-Alanine;alpha-Alanine;Alanine (USP);2-Aminopropanoic acid, L-;L-alpha-alanine;Propanoic acid, 2-amino-, (S);L-2-Aminopropionsaeure;(S)-alpha-Aminopropionsaeure;L- Alanine;L-2-Aminopropionic acid;L-Alanine (JAN);Propanoic acid, 2-amino-;Alanine, L-;2-aminopropanoic acid;L(+)-Alanine;(2S)-2-azaniumylpropanoate;L-Alanin;2-Aminopropionic acid;.alpha.-Alanine;Alanine, L- (7CI,8CI);L-Alanine (9CI);(S)-alanine;Ala;H-Ala-OH;(s)-2-Amino propionic acid;L-Alanine (L-Ala);
- EINECS:
- 200-273-8
- Density:
- 1.161 g/cm3
- Melting Point:
- 314.5 °C (dec.)(lit.)
- Boiling Point:
- 212.9 °C at 760 mmHg
- Flash Point:
- 82.6 °C
- Solubility:
- 166.5 g/L (25 °C) in water
- Appearance:
- White crystalline powder
- Hazard Symbols:
Xi- Risk Codes:
- 36/37/38
- Safety Description:
- 24/25-36-26 Details
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Chemistry
Structure of L-Alanine (CAS NO.56-41-7):
IUPAC Name: (2S)-2-aminopropanoic acid
Empirical Formula: C3H7NO2
Molecular Weight: 89.0932
EINECS: 200-273-8
Index of Refraction: 1.459
Molar Refractivity: 21 cm3
Molar Volume: 76.7 cm3
Polarizability: 8.32×10-24cm3
Surface Tension: 45.8 dyne/cm
Density: 1.161 g/cm3
Flash Point: 82.6 °C
Enthalpy of Vaporization: 49.5 kJ/mol
Melting Point: 314.5 °C (dec.)(lit.)
Boiling Point: 212.9 °C at 760 mmHg
Vapour Pressure: 0.0661 mmHg at 25°C
Water Solubility: 166.5 g/L (25 ºC)
Stability: Stable. Incompatible with strong oxidizing agents.
Product Categories: Food & Feed ADDITIVES;Amino Acids;Alanine [Ala, A];Amino Acids and Derivatives;alpha-Amino Acids;Biochemistry;Nutritional Supplements;L-Amino Acids;Amino Acids;Alphabetical Listings;AStable Isotopes;Stable Isotopes;GABA/Glycine receptor;bio-chemical;food additive;food flavor;alanine;amino acid;chemicals;food additives;organic acids;pharmaceutical intermediate
Uses
In food and drink, L-Alanine (CAS NO.56-41-7) is used as the antiseptic, flavour sauce, and amino acids low-alcohol liquor etc. In medicine, it is used for synthesis of amino acids infusion.
Production
L-Alanine (CAS NO.56-41-7)can be prepared by the condensation of acetaldehyde with ammonium chloride in the presence of sodium cyanide by the Strecker reaction, or by the ammonolysis of 2-bromopropionic acid:
Toxicity Data With Reference
| 1. | sce-hmn:lyms 50 mg/L | MUREAV Mutation Research. 280 (1992),279. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes of L-Alanine (CAS NO.56-41-7): 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26
S24/25:Avoid contact with skin and eyes.
S36:Wear suitable protective clothing.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
RTECS: AY2990000
F: 10
HazardClass: IRRITANT
HS Code: 29224995
Specification
L-Alanine , its cas register number is 56-41-7. It also can be called (S)-2-Aminopropanoic acid ; (S)-2-Aminopropionsaeure ; (S)-Alanine ; (S)-alpha-Aminopropionsaeure ; 2-Aminopropanoic acid, L- ; Alanina ; Alanine ;
Alaninum ; L-(+)-Alanine ; L-2-Aminopropanoic acid ; L-2-Aminopropionic acid ; L-2-Aminopropionsaeure ; L-S-Aminopropionic acid ; L-alpha-Aminopropionic acid ; Propanoic acid, 2-amino-, (S)- ; alpha-Aminopropionic acid .