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P
R O D U C T
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Catechol |
| Chemical name: 1,2-Dihydroxybenzene;
Pyrocatechol
Description: colorless monoclinic crystal
Molecular
formula: C6H6O2
Molecular weight:110.11
Specific gravity: 1.37
Male capacity: 0.14KJ.mol-1.K-1
Melting point: 104-105oC
Boiling point: 246oC
Flashing point: 127oC |  |
Soluble in water, alcohol, ether, benzene, chloroform, pyridine,
liquid alkali. Catechol is poisonous, sublimates easily, burn and oxidate easily
and becomes brown when exposed in air.
Uses: Catechol is an important
chemical industry intermediate product with wide uses. It can be used as rubber
harden-idant, electroplate additive, skin preservative as well bactericide, dye
hair, photographic developer,color photographic anti-oxidant, furcoloring agent,
paint and varnish anti-shrivel. Furthermore, catechol is an important material
of synthetic resin, tannic acid, agricultural chemical furantion, medical the
rhizome of chinese goldthread, perfume vanillin, pepper aldehyde and so on.
Specification: First-class product,Standard-class product
Packing:in
25kg water proof poly compound bag within liner, per 15-17/mt in a 20'fcl.
Storage and transport: Catechol should be tightly and completely cut off
from air when it is packed and transported as general combustible chemical goods.
Standard: main quality standard indicators.
| Specification |
Appearance |
Melting point |
Content |
| First-class product |
Light gray to light brown (flake) grain |
104-106oC |
≥99% |
| Up-to-standard-class product |
Light gray to light brown (flake) grain |
103-105oC |
≥98% |
Hydroquinone
Chemical name: 1,4-Dihydroxybenzene
Description: needle like crystal
Molecular formula: C6H6O2
Molecular weight: 110.11
Specific gravity: 1.332
Melting
point: 172oC
Boiling point: 286oC
Flashing
point: 165oC
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Hydroquinone is soluble in water, alcohol, ether and slightly soluble
in benzene.
Uses: hydroquinone is an important chemical industry materia,
which is mainly used in developer anthraquinone, azobenzene dye, synthetic ammonia
flux, rubber antiox-idant, paint and stabilizer as well antioxidant of essense.
Specification: Industry grade , photographic grade
Packing:
in 25kg water proof poly compound bag within liner, per 15-17/mt in a 20'fcl.
Storage and transport: It should be handled with care when it is used
and transported. It should be handled as general poisonous chemical goods.
Standard: Main quality standard indicators.
| Items |
Industrial-grade
Q/320700FE02-1999 |
Photographic-grade
GB10552-89 |
| Appearance | white
or off-white powdery crystal | white or off-white
powdery crystal | | Content
%(m/m) | 99.0-101.0 | 99.0-101 |
| Melting point oC |
≥ 170.0 | 171.0-175.0 |
| Solubility | | Up
to standard | | Ignition
residue | ≤0.1% |
≤ 0.05 % | | Heavy
metal (Pb) | |
≤ 0.002 % | | Iron
(Fe) | |
≤ 0.002 % |
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