L Arginine powder factory price CAS No.74-79-3

Product:L Arginine powder factory price CAS No.74-79-3

CAS No.74-79-3

EINECS No. 200-811-1[1]

Appearance:White rhomboid crystals

99% purity

Package:25kg/drum

HS Code:2922499990

Description:

White rhomboid crystals (precipitated from water, containing 2 molecules of crystal water) or monoclinic flake crystals (no crystal water), odorless, bitter taste; easily soluble in water (the solubility in water at 0°C is 83g/L, the solubility in water at 50°C 400g/L), slightly soluble in ethanol, insoluble in ether; pI6.0; two molecules of crystal water are lost when heated to 105℃, the color becomes darker at 230℃, and the decomposition point is 244℃; specific rotation [α]20D +12.5°(0.5-2.0mg/ml, H2O), [α]20D+27.3°(0.5-2.0mg/ml, 6mol/L HCl); the aqueous solution has a great absorption at 205nm (1gε3.28).

Arginine is L-form, the product crystallized from water contains two molecules of crystal water, and the product crystallized in ethanol is anhydrous. Due to the presence of the guanidine group, arginine is basic and easily reacts with acid to form a salt.

Properties: white orthorhombic (dihydrate) crystals or white crystalline powder. Melting point 244°C. After resolving and crystallization with water, it loses crystal water at 105°C. Its aqueous solution is strongly alkaline and can absorb carbon dioxide from the air. It is soluble in water (15%, 21℃), insoluble in ether, and slightly soluble in ethanol. It is abundantly present in protamine, which is also the basic composition of various proteins

Molecular weight: 174.20

Melting point: 244°C (decomposition). After recrystallization from water, it will lose crystal water at 105°C. Its water solubility is strongly alkaline and can absorb carbon dioxide from the air. It is soluble in water (15%, 21°C), insoluble in ether, Slightly soluble in ethanol.

Content: 99.0%-100.0% Specific rotation: +26.9°--27.9°

Transmittance:≥98% Chloride:≤0.02%

Sulfate content:≤0.02% Iron content:≤10ppm

Heavy metal content:≤10ppm arsenic content:≤1ppm

Other amino acids: must not be tested. Loss on drying:≤0.5%

Ignition residue:≤0.10% PH value: 10.5-12.0

Product Name: L-Arginine

Content: 99%