Hydroquinone (USP) pure, pharma grade

1,4-Benzenediol, 1,4-Dihydroxybenzene

Assay (calc. a.d.s.): 99.0-100.5%

Recommended prices only. For prices and orders please contact your local distributor.
Box prices only valid with purchase of full box.

	code	packaging size	price per unit	box price per unit
	Code & packaging		Price per piece
	code 141351.0914	packaging size 5 kg	Product active until stock lasts.

Melting Point:: 170 °C
Boiling Point:: 287 °C
Solubility:: water 70 g/l at 20 °C
Physical Description:: solid
White crystals, turns to grey on exposure to air and light

Product Code:: 141351
Product Name:: Hydroquinone (USP) pure, pharma grade
Quality Name:: pure, pharma grade
Specifications:: Assay (calc. a.d.s.): 99.0-100.5%
Identity according to Pharmacopoeias:: passes test
Melting range: 172-174°C

Maximum limit of impurities
Insoluble matter in H2O: passes test
Residue on ignition (as SO4): 0.1 %
Sulfate (SO4): 0.05%
Residual solvents (Ph.Eur/USP): passes test
Pyrocatechol: 0.05%
Water (H2O): 0.5 %
Heavy metals (as Pb): 0.002%
Residual metals ICP: (according to EMEA/CHMP/SWP/4446/2000)
Class 1A (Pt, Pd): 10 ppm
Class 1B (Ir, Rh, Ru, Os): 10 ppm
Class 1C (Mo, Ni, Cr, V): 25 ppm
Class 2 (Cu, Mn): 250 ppm
Class 3 (Fe, Zn): 1,300 ppm