[English Name] : sodium phosphate
[Molecular Formula]:Na3PO4·12H2O
[Molecular Weight]:380.12
[Characteristics]:Six FangJing is crystallizationColorless needle;Soluble in water,Insoluble in organic solvents;The relative density (20 degrees Celsius)1.62; Soluble 73.3-76.7 degrees Celsius (decomposition),In the dry air weathering,100 degrees centigrade namely loseJieJingShui twelve and water content(Na 3 PO 4 ) . In aqueous alkaline,The erosion of the skin has certain effect.
[Use] : In road metallurgy, chemical, textile, printing, dyeing, papermaking, industrial water softener for,Boiler tubeQing agent and detergent,Metaltpreventive,Dye intermediatedesiccant,The fining, sugar candy juice,Photographic contrast,Fabric mercerizing enhancement, rubber latex concreting,Dental pick mixture,In pharmaceutical preparations also have certain effect.
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Index name
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index
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Excellent Grade
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First-rate Grade
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Regular Grande
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Trisodium phosphate
(Na3PO4·12H2O)content %≥
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98.5
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98.0
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95.0
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Sulfate(SO42-)content, %≤
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0.20
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0.50
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0.80
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Chloride (CL-) content, %≤
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0.30
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0.40
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0.50
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water insoluble content, %≤
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0.05
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0.10
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0.30
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methyl orange alkalinity(Na2O)
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16.5-19.0
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16.0-19.0
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15.5-19.0
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(Fe) content, %≤
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0.01
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0.01
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0.01
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Arsenic (As) content, %≤
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0.005
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0.005
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0.05
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