SPECIFICATIONS

CALMAGITE

Synonyms:				3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)-1-
					naphthalensulfonic acid

CAS No:					3147-14-6

Chemical Formula:				C17H14N2O5S

Formula Weight:				358.37

Description:					Black powder with chunks

Solubility 0.1% (water):			Clear red solution

Loss on drying at 110 Deg. C:		<10%

Absorptivity 1%/1cm,(Ammonia
Buffer, pH 10.0+2ml of 0.05M
EDTA solution) at Lambda max.
604.0 nm:					>300

Visual transition Interval:			From pH 7.1 (red)
						To pH 9.1 (blue)

Suitability as Magnesium Indicator:	To pass test

Lambda max:				602 nm in 0.01 N Sodium Hydrate

Melting Point;				300 deg. C

Effective: 01/27/09