L-Cystines, AJI92


Weight: 200g
Price:
Sale price€37,75

Description

Product Name: L-Cystine
CAS Number: 56-89-3; EC Number: 200-296-3
Chemical Formula: C6H12N2O4S2
Molecular Weight: 240.2918
Synonyms: 2S,7S)-(-)-Cystine;
3,3'-Dithiobis(2-aminopropionic acid);

Specification:

Appearance:

White crystalline powder

Assay[dry basis]:

98.5% to 101.0%

Specific rotation [α]D20:

-215º~-225º

State of solution:

Clear and colorless

Transmittance:

98.0% min.

Loss on drying

0.20% max.

PH:

5.0~6.5

Residue on ignition [sulfated]:

0.10% max.

Chloride [Cl-]:  

16.6% to 17.0%

Ammonium [NH4+]:

0.020% max.

Sulfate [SO4]:

0.020% max.

Iron [Fe]:

10ppm max.

Heavy metals [Pb]:

10ppm max.

Arsenic [As2O3]:

1ppm max.

Other amino acids:

Chromatographically not detectable

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