Hydroquinone (USP) pure, pharma grade

1,4-Benzenediol, 1,4-Dihydroxybenzene

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

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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