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Hydroquinone

CAS No.：123-31-9
Molecular Formula：C6H4(OH)2
Purity：99.5%-101.0%
Molecular Weight：110.12

hydroquinone Photo grade （widely used in food and cosmetics）


Usage: Can be used as intermediates of polymer, monomer inhibitor, dyes and auxiliary; as antioxidant in food and medicine industry; as anti coagulant for gas; developer for film, photos and X-ray film.

Specification:       

Item

Specification

Typical Test Result

APPEARANCE


White needle crystal or powder

White needle crystal or powder

PURITY

%

99.5-101.0

99.8

MELTING POINT

°C

171-175

172.0-174.0

WATER

%

0.3 MAX

0.12

SOLUBILITY


Transparent without insoluble matter

Transparent without insoluble matter

RESIDUE ON IGNITION (ASH)

%

0.05 Max

0.001

HEAVY METAL (Pb)

%

0.002 Max

0.0010

IRON (Fe)

%

0.002 Max

0.0009

Advantage of our product（Comparison table）：

SUPPLIERS

ZENVA SINO

SOME OTHER HQ PRODUCER

PRODUCTION PROCESS

ANILINE

PHENYL HYDROXIDE

QUALITY

Not containing pyrocatechin and the purity is higher than that of product made from phenyl hydroxide；not containing dioxin

Containing pyrocatechin because of the incapable complete separation of pyrocatechin and hydroquinone; containing of dioxin

USAGE

Can be used in cosmetic and  food additives， also used in industrial area, such as rubber antioxidant

Mainly used in industrial area, such as rubber antioxidant；Can not be used in cosmetic and food


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