04276
磷酸钠 二元
puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, anhydrous, 98-100.5% (calc. to the dried substance)
别名:
磷酸二钠, 磷酸二钠, 磷酸氢二钠, 磷酸氢钠
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关于此项目
Quality Level
agency
meets analytical specifications of BP, meets analytical specifications of Ph. Eur., meets analytical specifications of USP
grade
puriss.
assay
98-100.5% (calc. to the dried substance)
form
powder
quality
meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
impurities
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)
loss
≤1% loss on drying, 105°C, 4h, ≤1% loss on drying, 130 °C
pH
8.4-9.6 (20 °C, 1%)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
solubility
H2O: soluble 8 parts, H2O: very soluble (Hot), alcohol: insoluble
anion traces
chloride (Cl-): ≤50 mg/kg, fluoride (F-): ≤10 mg/kg, sulfate (SO42-): ≤200 mg/kg
cation traces
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
suitability
complies for appearance of solution
SMILES string
[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 key
BNIILDVGGAEEIG-UHFFFAOYSA-L
Application
Biochem/physiol Actions
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存储类别
13 - Non Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable