AMMONIUM SILICOFLUORIDE

PRODUCT IDENTIFICATION

CAS NO. 16919-19-0

AMMONIUM SILICOFLUORIDE

EINECS NO. 240-968-3
FORMULA

 (NH4)2SiF6

MOL WT. 178.15

H.S.CODE

2826.90

TOXICITY Oral mouse LD50: 70 mg/kg
SYNONYMS Ammonium Fluorosilicate; Cryptophthalite;
Silicon Plasma Standards; Silicate(2-), Hexafluoro-, Diammonium; Ammonium Hexafluorosilicate;
SMILES Hydrogen Fluoride and Ammonia

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE White free flowing crystals
MELTING POINT 100 C (Decomposes)
BOILING POINT  
SPECIFIC GRAVITY 2.01
SOLUBILITY IN WATER Soluble (Soluble in alcohol)
pH 3.3 (1% Sol.)
VAPOR DENSITY  

AUOIGNITION

 

NFPA RATINGS

 

REFRACTIVE INDEX

 

FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Hardening and dustproofing of concrete, manufacturing of ammonium chlorate, Glass etching, Souring agent, Sand inhibiitor in Magnesium metal casting, Textile
SALES SPECIFICATION

APPEARANCE

White free flowing crystals
ASSAY [(NH4)2SiF6] 98.0% min
FLUORIDE (F) 60% min
FREE ACID (H2SiF6) 0.3% max
MOISTURE

0.6% max

WATER INSOLUBLES 0.5% max
SULFATE (SO4) 0.6% max
TRANSPORTATION
PACKING 25kgs in Bag
HAZARD CLASS 6.1
UN NO.

2854

PRICES