Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or Quinol BP Ph Eur USP Grade Manufacturers Exporters

Aadhunik Industries is a manufacturing group company. Aadhunik Industries is pioneer manufacturers of Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or Quinol, Specialty Chemicals, Pharmaceutical Excipients, Food Fragrance & Flavor chemicals in India. It has toll manufacturers and representatives in UAE, Europe, Canada & USA and agents & customers in all countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Netherlands, Italy, Spain, Germany, Portugal, France, Malaysia, Indonesia, Thailand, Korea, Japan, Russia etc.

Aadhunik Industries and/or associated units are FDA-GMP certified, Halal and/or Kosher certified, REACH registered, ISO-9001, ISO-22000 HACCP certified. We offer crystals granules in precise micron or mesh size as per buyers needs. We offer very high purity standards as per specifications required.

Hydroquinone is a skin-lightening agent. It bleaches the skin, which can be helpful when treating different forms of hyperpigmentation.

Properties and Specifications of Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or HQ or Quinol:
Appearance: White needle crystal.
Odor: Odorless.
Assay: 99.7%
Solubility in CH3COOH: Clear
Residue on ignition: 0.01
Heavy metal as Pb: 0.001% maximum.
Iron: 0.001% maximum.
Resorcinol: Nil
Relative density: about 1.33
Melting point: 172C to 174C literature.
Boiling point: 285C to 287 literature.
Flash point: 165C.
Auto-ignition temperature: 515C.
Solubility: Soluble in water. Very soluble in carbon tetrachloride.

Hydroquinone BP Ph Eur Grade:
C6H6O2 --- 110.11 --- CAS 123-31-9
Action and use: Depigmenting agent.

DEFINITION
Hydroquinone is 1,4-benzenediol. It contains not less than 99.0% and not more than 100.5% of C6H6O2, calculated with reference to the anhydrous substance.

CHARACTERISTICS
Fine white or almost white needles, which darken on exposure to light and air.
Freely soluble in water, in ethanol (96%) and in ether.

IDENTIFICATION
A. The light absorption in the range 230 to 350 nm, of a 0.0025% w/v solution in methanol exhibits a maximum at 293 nm.
B. To pass the test.

TESTS
Melting point: 172C to 174C.
Water: Not more than 0.5%,
Sulfated ash: Not more than 0.5% w/w.

Hydroquinone USP Grade:
C6H6O2 --- 110.11
1,4-Benzenediol.
Hydroquinone CAS 123-31-9.

Hydroquinone contains not less than 99.0 percent and not more than 100.5 percent of C6H6O2 calculated on the anhydrous basis.
Packaging and storage: Preserve in tight, light-resistant containers.

Identification:
A: Infrared Absorption.
B: To pass the chromatography test.
C: A 1 in 40,000 solution in methanol exhibits an absorbance maximum at 293 ± 2 nm.
Melting range: between 172C and 174C.
Water Determination: not more than 0.5%.
Residue on ignition: not more than 0.5%.

CAS Number 123-31-9, Hydroquinone or 1,4-Benzenediol or 1,4-Dihydroxybenzene or Quinol BP Ph Eur USP Grade manufacturers suppliers exporters at:

manufacturer supplier exporter
Aadhunik Industries
Ankleshwar Gujarat & Mumbai, India
TEL: (OFFICE) 91-22-23774610, 23723564.