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

ORCEIN SYNTHETIC

Synonyms:					Natural Red 28

CAS No:					1400-62-0

Appearance:					Reddish-Brown Crystalline Powder

Solubility 0.1%
(0.1N NaOH):				Clear purple solution

Absortivity:					525-625
1%/1cm, at λ max. 579.6nm

Ratio Max P+/-15nm:			0.98-1.18

Loss on drying:				<12.0%
(at 110˚ C / 1 hour)

Suitability for microscopy:		Conforms

Effective: 08/11/15