Ammonium Fluosilicate

[Molecular Formula] (NH₄)₂SiF₆

[Molecular Weight] 178.14

[Properties]
Colorless crystal powder, soluble in alcohol and water. Its type of crystal include: -type and -type; -type is equiaxial crystal, while -type is trimorphism, stable in air. -type can transform into -type if heated for a long time. Density(-type): 2.011g/cm2; density(-type): 2.152g/cm2; solubility in water: 18.5(25).

[Uses]
It is used as mothproofing agent, disinfectant in brewing industry, etching agent for glass, anti-moth agent for textiles. It is also used in metal casting, electroplating, extracting potassium from greensand, producing cryolite and ammonium chlorate, etc.

[Quality Index] Enterprise Standard(ES)

Item	Index
(NH4)2SiF6, %	98
Sulfate(SO4), %	0.3
H2SiF6, %	0.6
Moisture, %	0.6
Water-insoluble Matter, %	0.5
Appearance	white crystal

[Package] Plastic woven bag lined with polyethylene plastic bag, net weight: 50kg/bag.

Cryolite(Sodium Fluoaluminate, Aluminium Sodium Fluoride)

[Molecular Formula] Na₃AlF₆

[Molecular Weight] 209.94

[Properties]
Clorless monocrystal crystal, usually appears offwhite, pink, yellowish or black because of impurity, usually present as indiscerptible compact block with glass lustre, specific gravity: 2.9-3.0, melting point: 1000°C; slight soluble in water, aqueous solution is acidic, decompose to toxic hydrogen fluoride gas when meeting with sulfuric acid.

[Uses]
It is mainly used as fluxing agent in aluminum production, insecticide for crops, melting agent and opaquefier for enamel glaze; also used to produce opal glass and as electrolyte in producing aluminum alloy, iron alloy and boiling steel; as ingredient of grindstone and as raw material in dip coating of aluminum on iron and steel.

[Quality Index] Standard: GB 4291-84

Item	Index			Note
	Excellent Grade	First Grade	Second Grade	1. the content is based on dry base; 2. usually, the molecular ratio of NaF to AlF3 is 2 to 1; if the other requirement is needed, please declare in contract; 3. cryolite is white powder . 4. the agglomeration larger than 4mm in diameter is allowable, but the weight is not heavier than 5%.
F£¬%	53	53	53
Al, %	13	13	13
Na, %	31	31	31
SiO2+Fe2O3, %	0.25	0.4	0.5
Sulfate(SO4), %	0.88	1.2	1.5
P2O5, %	0.02	0.05	0.05
H2O,%	0.5	0.8	1.3

[Package] plastic barrel, net weight: 25kg/barrel.

Industrial Hydrofluoric Acid

[Molecular Formula] HF

[Molecular Weight] 20.01

[Properties]
Clear colorless fuming liquid,very easy to volatilize, to produce fluoride when reacting with metal salt, oxide and hydroxide, strong corrosion.

[Uses]
It is used as raw material to produce organic and inorganic fluoride, used in etching of glass, finishing and polishing; also used in cleaning of metal surface.

[Quality Index] Standard: GB7747-87

Item	Excellent Grade	First Grade			Second Grade
	F-40	F-40	F-55	F-60	F-40	F-55	F-60
HF, %	40	40	55	60	40	55	60
Fluorosilicic Acid(H2SiF6),%	0.02	0.2	0.4	0.5	0.6	1.0	1.0
Sulfate(SO4), %	0.02	0.05	0.08	0.4	0.6	0.8	1.0
Iron(Fe),%	0.005	0.1	-	-	-	-	-

[Package] plastic barrel, net weight: 7kg,10kg or 25kg/barrel; iron-plastic barrel, net weight: 50kg or 200kg/barrel.