di-Sodium tetraborate anhydrous, EssentQ®

- Synonyms: Sodium biborate, Sodium borate, Borax
- Na2B4O7
- M = 201,22 g/mol
- CAS [1330-43-4]
- EINECS-No.: 215-540-4
- Solub. in water: (20 ºC): 25,6 g/l
- Melting point: 742 ºC
- Boiling point: 1575 ºC (decomposes)
- Vapour pressure: (1200 ºC) 7,3 hPa
- LD 50 (oral, rat): 2660 mg/kg (decahydrate substance)
- GHS-signal word: Danger
- GHS-H sentences: H360FD
- GHS-P sentences: P280 - P201 - P202 - P308+P313 - P405 - P501a
- Tariff number: 2840 11 00 00
- Applications: in radiology applications, synthesis of organic products, cosmetics, for pharmaceutical use.

SPECIFICATIONS
assay (acidimetric): min. 98 %
insoluble in water: max. 0,05 %
chlorides (Cl): max. 0,05 %
phosphates (as PO4): max. 0,005 %
sulfates (SO4): max. 0,05 %
calcium (Ca): max. 0,02 %
copper (Cu): max. 0,005 %
heavy metals (as Pb): max. 0,005 %
iron (Fe): max. 0,005 %
lead (Pb): max. 0,005 %
magnesium (Mg): max. 0,02 %
nickel (Ni): max. 0,005 %
potassium (K): max. 0,05 %