Ammonium fluoroborate

Item	High-class product	First-class product
Ammonium fluoroborate (NH4BF4), % ≥	98	97
PH value of aqueous solution (1% solution)	3.5-5	3.5-5
Water solubility test	pass	pass
Chloride (Cl-), % ≤	0.005
Sulfate (SO42-), % ≤	0.005	0.01
Phosphate (PO43-), % ≤	0.005
Silicate (base on SiO2), % ≤	0.01	0.8
Iron (Fe), % ≤	0.005	0.1
Heavy metal (base on Pb), % ≤	0.003	0.003

Properties: bright pellucid crystal or colorless acicular crystal; relative density 1.85; soluble in water, aqueous solution is weak acidic; insoluble in alcohol; decompose when heated over 110℃; sublime when heated to a great extent.

Use: It can be used as resin finishing agent and catalyst in textile, printing and dying industries, gas fluxing agent to improve inert atmosphere, lead fluxing agent for hard soldering, fire retardant and chemical reagent, etc.

Packing: Pack in 25kg woven bag lined with polyvinyl plastic bag.

Storage, transportation & safety protection: It should be stored in shady, cool, ventilated and dry warehouses. Keep it away from rain and solarization.