Sodium Silicofluoride

sodium silicofluoride 99%min

- product identification
cas no. : 16893-85-9
h.s. Code : 2826.901000
formula : na2sif6
molecular weight : 188.06
toxicity : highly toxic to all plant and animal life
synonyms : sodium silicofluoride; sodium hexafluorosilicate; sodium fluosilicate; earwig bait; disodium hexafluorosilicate
raw materials : fluorosilicic acid with sodium carbonate

- physical and chemical properties
physical state : (apperance) it is colorless hexagonal, odorless and tasteless crystal with relative density 2.679. It is hygroscopic. It is soluble in ether, insoluble in alcohol. The solubility in acid is greater than in water. It decomposes in alkaline solution and produces sodium fluoride and silicon dioxide. It is decomposed to sodium fluoride and silicon tetrafluoride by heating to 300'c. It is noxious!
specific gravity : 2.679
solubility in water : 0.76 g/100 ml at 25 c , 2.45 g/100 ml at 100 c

- applications
it is used as antiseptic in timber industry, hygroscopic agent of acid-resisting concrete, solidifying agent in natural latex products, additive in plating with zinc, nickel, iron and filler in plastic and fluorinating agent in pharmaceuticals and drinking water. It is used to produce insecticide in pesticide industry and sodium fluoride in man-made cryolite.

- specification
quality standard : hg/t3252-2000
appearance : it is colorless hexagonal, odorless and tasteless crystal
testing items : quality standard reference testing results
purity (na2sif6) dry basis : 99.0%min / 99.53%min
loss on drying at 105oc : 0.3%max / 0.14%
free acid(based on hci) : 0.1%max / 0.032%
water-insoluble matter : 0.40%max / 0.32%
heave metal(based on pb) : 0.02%max / 0.015%
iron(fe) : 0.02%max / 0.014%
fineness(through 250um test bolter) : 90.0%min / 95%

- transportation
storage : store at a ventilating, and dry place, keep away from food.
packing : in 25kg and 50kg plastic woven bag lined with high pressure polyethylene plastic bag
hazard class : 6.1
un no. : 2674

- other trade information
min. Order quantity : 10 mts
supply capacity : 50,000mts /year
loading capacity : 27mts/1080bags(1x20'fcl)
port of loading : huangpu port, china
fresh stocks : yes
ref.price : usd405.- ~ usd425.-/mt fob huangpu, china
shipment time : within 2-3 weeks upon receipt of advance payment or l/c .
payment time : t/t in advance, sight l/c, l/c 60 days after b/l date
origin : yunan kunming
sample availability : yes
main export markets : india, indonesia, pakistan, egypt, turkey