3792-50-5

Basic information

• Product Name: Sodium L-aspartate
• Synonyms: Sodium (2S)-2-amino-3-carboxypropanoate;aspartatemonosodiumsalt;monosodiumaspartate;MonosodiumL-aspartate;L-ASPARTATE SODIUM;L-ASPARTIC ACID MONOSODIUM SALT;L-ASPARTIC ACID SODIUM SALT;L-ASPARTIC ACID NA SALT
• CAS NO: 3792-50-5
• Molecular Formula: C₄H₅NO₄*2Na
• Molecular Weight: 177.07
• EINECS: 223-264-0
• Product Categories: Amino acid salt;food additive;food additives;pharmaceutical intermediate
• Mol File: 3792-50-5.mol
• Article Data: 4

Chemical Properties

• Melting Point: ~140 °C (dec.)
• Boiling Point: 264.1oC at 760 mmHg
• Flash Point: 113.5oC
• Appearance: white crystalline powder
• Density: 1.514 g/cm³
• Vapor Pressure: 0Pa at 20℃
• Storage Temp.: Store at RT.
• Solubility: H2O: ≥100 mg/mL
• Water Solubility: 631.7g/L at 20℃
• CAS DataBase Reference: Sodium L-aspartate(CAS DataBase Reference)
• NIST Chemistry Reference: Sodium L-aspartate(3792-50-5)
• EPA Substance Registry System: Sodium L-aspartate(3792-50-5)

Safety Data

• WGK Germany: 3
• F: 3
• Hazardous Substances Data: 3792-50-5(Hazardous Substances Data)

Usage

Chemical Properties

White crystalline powder

Uses

L-Aspartic Acid Sodium Salt is washing or cleaning agent containing Iminodisuccinate and/or Iminotrisuccinate.

Flammability and Explosibility

Notclassified

InChI:InChI=1/C4H7NO4.Na/c5-2(4(8)9)1-3(6)7;/h2H,1,5H2,(H,6,7)(H,8,9);/q;+1/p-2/t2-;/m0./s1

Upstream product

• 56-84-8 L-Aspartic acid 
• 1310-73-2 sodium hydroxide 

Downstream Products

• 1116-12-7 N^α-decanoyl-L-aspartic acid 
• 220201-34-3 mono-L-aspartyl chlorin e6 tetrasodium salt 
• 56-41-7 L-alanin 
• 1071-36-9 sodium cyanoacetate 
• 1428416-71-0 [2-(4-diethylaminobutyl)succinato][cis-(1,2-trans-cyclohexyldiamine)]platinum(II) phosphate 
• 1116-13-8 N^α-lauryl-L-aspartic acid 
• 1782-17-8 N-hexadecanoyl-L-aspartic acid 

Relevant articles and documents

Method for preparing L-asparaginic acid disodium

The invention discloses a method for preparing L-asparaginic acid disodium. The method comprises the following steps of performing a reaction at the temperature of 70-80 DEG C by using sodium carbonate or sodium hydroxide, and L-asparaginic acid as raw materials, and by using water as a solvent, after the reaction is finished, adjusting the pH value of reaction liquid to 9.0-12.0, decoloring the reaction liquid, performing filtration, performing concentration until the Baume degree of a solution is 40-45 degree Be, and reducing temperature; transferring the solution after temperature reduction is completed to a vacuum freeze drier, maintaining the pressure of the vacuum freeze drier to be 20-40Pa, performing pre-freezing at the temperature of minus 30 to minus 20 DEG C for 2-4h, and then maintaining the temperature to be at minus 25 to minus 15 DEG C for 3-5h; and drying materials after vacuum freeze-drying at the temperature of 70-80 DEG C for 3-6 hours, so as to obtain L-asparaginic acid disodium products. According to the method disclosed by the invention, an organic solvent is not used, so that the safety coefficient of production environment is increased; and the products are free from solvent residues, so that the quality of the products is improved, and the water content is easy to control.

METHODS FOR PRODUCING POLYASPARTIC ACID PRECURSOR POLYMER AND POLYASPARTIC ACID SALT

Disclosed are a method for producing a polyaspartic acid precursor polymer by polymerization using at least one kind selected from a product obtained from maleic anhydride and ammonia and, maleamic acid as a monomer, wherein at least part of carboxyl groups in the monomers are a tertiary amine salt; and an industrially inexpensive and simple method for producing a polyaspartic acid salt by treating the polyaspartic acid precursor polymer obtained by this method with a basic aqueous solution.