17090-93-6

Basic information

• Product Name: L-aspartic acid, sodium salt
• Synonyms: L-ASPARTATE;L-Aspartic acid/sodium,(1:x) salt
• CAS NO: 17090-93-6
• Molecular Formula: C₄H₅NO₄*2Na
• Molecular Weight: 132.09474
• EINECS: 241-155-6
• Mol File: 17090-93-6.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 264.1°C at 760 mmHg
• Flash Point: 113.5°C
• Appearance: /
• Vapor Pressure: 0.00289mmHg at 25°C
• CAS DataBase Reference: L-aspartic acid, sodium salt(CAS DataBase Reference)
• NIST Chemistry Reference: L-aspartic acid, sodium salt(17090-93-6)
• EPA Substance Registry System: L-aspartic acid, sodium salt(17090-93-6)

Safety Data

• Hazardous Substances Data: 17090-93-6(Hazardous Substances Data)

Usage

General Description

L-aspartic acid, sodium salt is a white, crystalline powder that is a type of amino acid and a sodium salt. It is commonly used as a food additive and flavor enhancer in the food industry. L-aspartic acid, sodium salt is also used in the pharmaceutical industry as a buffering agent and in the production of medicines. It is an important ingredient in the production of artificial sweeteners, as well as in the synthesis of peptides and proteins. In addition, this chemical is also used in biotechnology and research laboratories as a component in cell culture media and as a source of nitrogen for microorganisms. Overall, L-aspartic acid, sodium salt has a wide range of applications in various industries due to its versatile properties and functionalities.

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-1/t2-;/m0./s1

Upstream product

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

Downstream Products

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

COMPOSITIONS AND METHODS OF MAKING A PHOTOACTIVE AGENT

An improved two stage reaction process for production of mono-L-aspartyl chlorin e6. In a first stage, the activation reaction between chlorin e6 and a carbodiimide produces a previously unknown anhydride in an activation reaction product. This reaction product is purified to remove a significant proportion of the precursors of di-L-aspartyl chlorin e6. The purified activation reaction product contains a higher concentration of the previously unknown anhydride. This purified reaction product is used in a second stage: a coupling reaction of the purified activation reaction product with aspartate. The coupling reaction produces a coupling reaction product that has significantly reduced di-L-aspartyl chlorin e6 concentration. This reduced di-L-aspartyl chlorin e6 concentration facilitates purification of mono-L-aspartyl chlorin e6 from the coupling reaction mixture.