di-Sodium tetraborate decahydrate, for analysis, ExpertQ®, ACS, ISO

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CAS: 1303-96-4

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x 1 kg :: Plastic bottle	SO07071000	Check availability	Buy

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Packaging	Reference	Stock	List Price
x 5 kg :: Plastic container	SO0707005P	Check stock	Buy
x 250 g :: Plastic bottle	SO07070250	Check stock	Buy
x 500 g :: Plastic bottle	SO07070500	Check stock	Buy

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Characteristic
Volume : x 1 kg

- Synonyms: Borax, Sodium biborate decahydrate, Sodium borate decahydrate
- Na2B4O7·10H2O
- M = 381,37 g/mol
- CAS [1303-96-4]
- EINECS-No.: 215-540-4
- Solub. in water: (20 ºC): 51,4 g/l
- Melting point: 75 ºC
- Boiling point: 1575 ºC (anhydrous)
- Vapour pressure: (20 ºC) 0,213 hPa
- LD 50 (oral, rat): 2660 mg/kg
- GHS-signal word: Danger
- GHS-H sentences: H319 - H360FD
- GHS-P sentences: P280 - P305+P351+P338 - P308+P313 - P337+P313 - P405 - P501a
- Tariff number: 2840 19 90 00
- Applications: reference material, for calibrating pH-meters, for pharmaceutical use.

SPECIFICATIONS
assay (acidimetric): 99,5 - 105,0 %
identity: passes test
appearance of solution: clear
insoluble in water: max. 0,005 %
pH (0,01 M, H2O): 9,15 - 9,20
chlorides (Cl): max. 0,001 %
phosphates (as PO4): max. 0,001 %
sulfates (SO4): max. 0,005 %
ammonium (NH4): max. 0,001 %
arsenic (As): max. 5 ppm
calcium (Ca): max. 0,005 %
copper (Cu): max. 5 ppm
heavy metals (as Pb): max. 0,001 %
iron (Fe): max. 5 ppm
lead (Pb): max. 5 ppm