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Physical and Chemical Properties
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Physical State
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Odorless, Colorless to White,
Hygroscopic Solid
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Melting Point
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328 °C
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Boiling Point
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520 °C (Sublimes)
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Specific Gravity
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1.53
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Solubility in Water
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28.3 g/100 ml at 25 C
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PH
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5.0 (10% sol at 25 C)
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Vapor density
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1.9
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NFPA Ratings
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Health: 1; Flammability: 0; Reactivity:0
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Flash Point
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Not considered to be a fire hazard
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Stability
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Stable under ordinary conditions
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Applications
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Electrolyte in dry
cells; pickling agent in zinc coating and tinning; Soldering fluxes to
remove oxide coatings from metals, Improving the adhesion of the solders.
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Sales Specification
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Treated Material
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Appearance
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White crystal, free
flowing
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Assay
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99.5% Min
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Moisture
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0.5% Max
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Sodium Chloride
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0.2% Max
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Fe
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0.001% Max
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Heavy Metal as Pb
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0.0005% Max
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Residue after ignition
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0.05% Max
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Substance insoluble in
water
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0.02% Max
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Sulfate
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0.02% Max
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Loss on drying
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0.4% Max
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Arsenic
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2 PPM Max
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Phosphate
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N/D
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PH Value
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4.20 – 5.80
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Anti-caking agent:
n-Octadecy lamine, Molecular Formula: CH3(CH2)17NH2
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