Name | sodium aspartate |
Synonyms | sodium aspartate Disodium aspartate Sodium L-aspartate DISODIUM L-ASPARTATE L-ASPARTIC ACID SODIUM Aspartic acid sodium salt L-Aspartic acid disodium salt |
CAS | 5598-53-8 |
EINECS | 227-012-0 |
InChI | InChI=1/C4H7NO4.2Na/c5-2(4(8)9)1-3(6)7;;/h2H,1,5H2,(H,6,7)(H,8,9);;/q;2*+1/p-2/t2-;;/m0../s1 |
Molecular Formula | C4H5MgNO4 |
Molar Mass | 155.39 |
Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
Use | Widely used in food industry preservatives, preservatives, can replace the monosodium glutamate |
introduction | sodium L-aspartate is colorless to white columnar crystal, or white crystalline powder. The taste is light and the taste threshold is 0.16%. Melting point 140.4 ℃. Soluble in water (66.7%,20 ℃), insoluble in ethanol. Natural products exist in sugar beets, milk protein, etc. |
application | l-aspartate sodium has excellent freshness and antiseptic effects, and is widely used as freshness and preservative in food industry, which can replace monosodium glutamate. It is often used in combination with natural condiments, sodium glutamate, glycine or sodium citrate, sodium succinate, etc. Mainly used in all kinds of curry, vinegar, canned fish, canned vegetables, bread, biscuits, beverages, etc. as flavor improvers. |
Preparation | A method for preparing sodium L-aspartate by biological enzyme, which is characterized in that fumaric acid, sodium hydroxide and ammonia are mixed in a molar concentration ratio of 1:1: 1 to 1:2: 2, and prepared as a substrate solution with pH 8.0 to pH 9.0, then the substrate solution is introduced into the fermentation broth containing aspartate enzyme, the volume ratio of the substrate solution to the fermentation broth is 16: 1-16: 3, under normal pressure conditions at the temperature of 37 ℃ ~ 40 ℃ for 12~20 hours, after separation to obtain L-aspartate sodium. |
use | preservatives and preservatives widely used in the food industry can replace monosodium glutamate |
category | toxic substances |
toxicity classification | low toxicity |
acute toxicity | abdominal cavity-mouse LD50: 6800 mg/kg |
flammability hazard characteristics | combustible in case of open flame and high heat; combustion produces nitrogen oxides, and sodium oxide stimulates smoke |
storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidant. |
fire extinguishing agent | sand, foam, carbon dioxide, mist water |