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1,2-Propylene glycol, for analysis, ExpertQ®, Reag. Ph Eur

- Synonyms: 1,2-Propanediol, 1,2-Dihydroxypropane
- C3H8O2
- M = 76,10 g/mol
- CAS [57-55-6]
- EINECS-No.: 200-338-0
- Density: 1,04 g/cm3
- Solub. in water: (20 ºC): miscible
- Melting point: -59 ºC
- Boiling point: 188 ºC
- Flash pt. 99 ºC
- Ignition temp.: 371 ºC
- Vapour pressure: (20 ºC) 0,11 hPa
- Refraction index: (n 20 ºC/D) 1,43
- LD 50 (oral, rat): 19400 - 36000 mg/kg
- Tariff number: 2905 32 00 90
- Applications: in antifreeze compositions, for pharmaceutical use, emulsifier, manufacturing of synthetic resins.

SPECIFICATIONS
assay (G.C.): min. 99,5 %
identity (IR-spectrum): passes test
appearance: clear and colourless

density (20º/20º): 1,035 - 1,040
refractive index n20/D: 1,431 - 1,433
acidity: passes test
acidity: max. 0,0005 meq/g
oxidizing substances (as H2O2): passes test
reducing substances: passes test
residue on ignition: max 0,005 %
water (K.F.): max. 0,2 %
Diethylene Glycol: max. 0,10 %
Ethylene Glycol: max. 620 ppm

Oxidizing substances (as H2O2) test: Not more than 0,2 mL of 0,05M sodium thiosulfate is equivalent to a maximum of 17 ppm, calculated as H2O2