56-89-3 C6H12N2O4S2 L-Cystine CAS NO.56-89-3

l-cystine basic information

product name:	l-cystine
synonyms:	(r-(r*,r*))-3,3’-dithiobis(2-aminopropanoicacid);1-cystine;3,3’-dithiobis(2-amino-,(r-(r*,r*))-propanoicaci;3,3’-dithiobis(2-aminopropanoicacid);3,3’-dithiobis-l-alanin;3,3'-dithiobis(2-aminopropanoic acid);3,3'-dithiodialanine;alanine, 3,3'-dithiobis-
cas:	56-89-3
mf:	c6h12n2o4s2
mw:	240.3
einecs:	200-296-3
product categories:	food and feed additive;amino acids;amino acid derivatives;cysteine [cys, c];nutritional supplements;l-amino acids;amino acids;amino
mol file:	56-89-3.mol

l-cystine chemical properties

mp	>240 °c (dec.)(lit.)
alpha	-224 º(c=2 in 1m hcl)
density	1.68
refractive index	-222.5 ° (c=1, 1mol/l hcl)
storage temp.	store at rt.
solubility	1 m hcl: 100 mg/ml
water solubility	0.112 g/l (25 ºc)
merck	14,2782
brn	1728094
stability:	stable. incompatible with strong oxidizing agents.
cas database reference	56-89-3(cas database reference)
nist chemistry reference	l-cystine(56-89-3)
epa substance registry system	l-cystine(56-89-3)

safety information

hazard codes	xi,xn
risk statements	36/37/38-22
safety statements	26-36-24/25
ridadr	2811
wgk germany	3
rtecs	ha2690000
hazard note	irritant
packinggroup	iii
hs code	29309014

msds information

l-cystine usage and synthesis

chemical properties	white crystalline powder
usage	l-cystine is a non-essential amino acid for human development. l-cystine is formed by the dimerization of two cysteines through the sulfur.

l-cystine preparation products and raw materials

raw materials	sodium hydroxide-->hydrochloric acid-->activated carbon-->activated carbon,decolor-->α-protein-->ethylenediaminetetraacetic acid-->l(+)-arginine-->l-histidine-->boc-d-tyrosine-->dl-serine-->terylene-->n-carbobenzoxy-dl-leucine-->silk-->keratin
preparation products	cilastatin-->l-cysteine-->l-cysteine hydrochloride anhydrous-->l-cysteine hydrochloride monohydrate-->dl-cystine

hennan sunlake enterprise corporation is located in henan province , the central plain of china , which enjoys favorable geogeaphical position and convenient transportion, the com[any was established in june. 1998 , until now having more than 18 years experience in manufacturing & exporting chemical raw material .

sunlake is a professional manufacturer engaged in producing and selling chemicals,including organic & inorganic chemicals , pigments & dyestuffs , water treatment chemicals , food & feed additives and others . these products have been being well exported to europe , southeast asia , the middle east , africa , south america and some other countries and areas.

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