Sodium sulfite, for analysis, ExpertQ®, ACS, Reag. Ph Eur
- Na2SO3
- M = 126,04 g/mol
- CAS [7757-83-7]
- EINECS-No.: 231-821-4
- Solub. in water: (20 ºC): 220 g/l
- Melting point: > 500 ºC (decomposes)
- LD 50 (oral, rat): 2610 mg/kg
- Tariff number: 2832 10 00 00
- Applications: analytical chemistry, laboratory reagent, solvents (in the cellulose industry), antibacterian, absorbent for: nitrogen oxides (gases).
SPECIFICATIONS
assay (iodometric): 98,0 - 100,5 %
identity (IR-spectrum): passes test
appearance of solution: clear and colourless
insoluble in water: max. 0,005 %
acidity: passes test
alkalinity: max. 0,03 meq/g
chlorides (Cl): max. 0,02 %
thiosulfates (S2O3): max. 0,1 %
arsenic (As): max. 1 ppm
copper (Cu): max. 5 ppm
heavy metals (as Pb): max 0,001 %
iron (Fe): max. 10 ppm
lead (Pb): max. 5 ppm
selenium (Se): max. 10 ppm
zinc (Zn): max. 0,001 %
| Reference | ||
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SO0669005P |
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SO06690500 |
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SO06691000 |
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