Specification

PRODUCT IDENTIFICATION
CAS No 21645-51-2
EINECS NO 244-492-7
FORMULA Al(OH)3
MOL WT 81.027 g/mol
H.S. CODE 2818.30
SYNONYMS Hydrated alumina; Alumina hydrate; Alumina trihydrate; ATH; Aluminum hydrate; Aluminum trihydrate; Alhydrogel; Superfos; Amphogel;

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE odorless white powder
MELTING POINT 300 C
SPECIFIC GRAVITY 2.42
SOLUBILITY IN WATER insoluble
pH weak basic
NFPA RATINGS Health: 1; Flammability: 0; Reactivity: 0
FLASH POINT Not considered to be a fire hazard
STABILITY Stable under ordinary conditions
DENSITY 2.40
ALKALINITY Alkaline (pH 8-9)

SALES SPECIFICATION
APPEARANCE white powder
Al(OH)3 99.5% min
Al2O3 64.0% min
SiO2 0.015% max
Fe2O3 0.02% max
MOISTURE 8.0% – 10.0%
LOSS ON IGNITION 34.0 – 35.0%
WHITENESS 85% min