31481
硫酸钠
puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., anhydrous, ≥99.0%
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关于此项目
线性分子式:
Na2SO4
化学文摘社编号:
分子量:
142.04
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-820-9
MDL number:
Assay:
≥99.0%
Form:
crystalline
InChI key
PMZURENOXWZQFD-UHFFFAOYSA-L
InChI
1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
SMILES string
[Na+].[Na+].[O-]S([O-])(=O)=O
grade
ACS reagent, puriss. p.a.
agency
USP/NF, reag. ISO, reag. Ph. Eur.
assay
≥99.0%
form
crystalline
impurities
≤0.0005% heavy metals (by ICP-OES), ≤0.0005% total nitrogen (N), ≤0.01% in water insoluble matters, ≤0.03% free alkali (as NaOH), ≤0.05% free acid (as H2SO4)
loss
≤0.5% loss on ignition, 800 °C
pH
5.2-8.0 (20 °C, 5%)
mp
884 °C (lit.)
density
2.68 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤10 mg/kg, phosphate (PO43-): ≤10 mg/kg
cation traces
As: ≤1 mg/kg, Ca: ≤20 mg/kg, Fe: ≤5 mg/kg, K: ≤100 mg/kg, Mg: ≤25 mg/kg
suitability
complies for appearance of solution
storage temp.
2-8°C
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存储类别
13 - Non Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
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