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meets analytical specifications of BP
meets analytical specifications of Ph. Eur.
meets analytical specifications of USP
品質等級
等級
puriss.
化驗
98-100.5% (calc. to the dried substance)
形狀
powder
品質
meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
雜質
reducing matter, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.002% ammonium (NH4)
≤0.2% water-insoluble matter
≤1% NaH2PO4 (calc. to dried subst.)
≤2.0% pyrophosphate (as Na4P2O7)
損耗
≤1% loss on drying, 105°C, 4h
≤1% loss on drying, 130 °C
pH值
8.4-9.6 (20 °C, 1%)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
溶解度
H2O: soluble 8 parts
H2O: very soluble (Hot)
alcohol: insoluble
負離子痕跡
chloride (Cl-): ≤50 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg
正離子痕跡
As: ≤2 mg/kg
Cd: ≤1 mg/kg
Cu: ≤10 mg/kg
Fe: ≤20 mg/kg
Hg: ≤1 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg
適合性
complies for appearance of solution
SMILES 字串
[Na+].[Na+].[H]OP([O-])([O-])=O
InChI
1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
InChI 密鑰
BNIILDVGGAEEIG-UHFFFAOYSA-L
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相关类别
應用
生化/生理作用
儲存類別代碼
13 - Non Combustible Solids
水污染物質分類(WGK)
WGK 1
閃點(°F)
Not applicable
閃點(°C)
Not applicable
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