Sodio tungstato diidrato, per analisi, ExpertQ®, ACS

- Synonyms: Sodium wolframate dihydrate
- Na2WO4·2H2O
- M = 329,86 g/mol
- CAS [10213-10-2]
- EINECS-No.: 236-743-4
- Solub. in water: (20 ºC): ~ 730 g/l
- Melting point: 100 ºC (release of crystalline water)
- LD 50 (oral, rat): 1190 mg/kg (anhydrous substance)
- GHS-signal word: Warning
- GHS-H sentences: H302
- GHS-P sentences: P264 - P270 - P301+P312 - P330 - P501a
- Tariff number: 2841 80 00 00
- Applications: analytical chemistry (precipitant for: alkaloids, blood sugar, uric acid), for biology.

SPECIFICATIONS
assay (gravimetric): 99,0 - 101,0 %
identity (IR-spectrum): passes test
insoluble in water: max. 0,01 %
alkalinity: max. 0,02 meq/g
chlorides (Cl): max. 0,003 %
sulfates (SO4): max. 0,01 %
heavy metals and iron (as Pb): max. 0,001 %
lead (Pb): max. 0,001 %
molybdenum (Mo): max. 0,001 %