S P E C I F I C A T I O N S

AMIDO BLACK 10B

Synonyms:				Naphthol Blue Black; Amido Schwarz;
4-Amino-5-Hydroxy-3-(p-nitrophenylazo)-6-
(phenylazo)-2,7-naphthalenedisulfonic acid,
disodium salt

C.I. No.:				20470

CAS No:				1604-48-8

Formula:				C22H14N6Na2O9S2

F.W.:					616.50

Appearance:				Dark brown to reddish-black powder

Identification:			To conform to structure and standard
Absorptivity 1%/1cm at
Lambda Max 618.0 nm		750 - 960

Solubility 0.1% (dist.water)	Clear blue solution

Loss on drying			10.0% maximum
@ 105 deg. C

Effective: 12/04/2008