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Sodium dichromate is an important basic chemical raw material. It is used as auxiliary in printing and dyeing industry, electroplating industry and leather industry.
It has special coloring ability and is widely used in glass coloring and fabric dyeing. Used as an oxidant for aniline dyestuff dyeing in printing and dyeing industry, a post-treatment agent for curing VAT dyestuff dyeing, and a mordant for acid mordant dyestuff dyeing. It is also used to color VAT dyes that are difficult to oxidize, and fast pigment dyestuff printing reserving agent.
In the process of printing and dyeing, trivalent chromium is produced by reduction of sodium bichromate, so as to improve dyeing fastness of mordant dyes.
Introduction:
Product name Sodium dichromate
Chemical name Sodium dichromate dihy drate
Chemical Formula Na2CrO7.2H2O
Molecular weight 297.99
CAS number 7789-12-0
EINECS number 234-190-3
Regulatory Information UN 3086 6.1/PG 1
Product description:
Appearance Orange crystal
Package 50kg woven bag with PE liner
Applications Oxidant for aniline dyestuff dyeing
A post-treatment agent for curing VAT dyestuff dyeing
A mordant for acid mordant dyestuff dyeing
Reserving agent for fast pigment dyestuff printing
Supply capacity 20,000MT/year
Technical Parameter:
( premium grade )
Specification Value
Chemical Composition NaCr2O7.2H2O (%) ≥99.5
SO4 (%) ≤0.2
Cl (%) ≤0.05
Fe (%) ≤0.01
Water Insolubles (%) ≤0.002
( lite grade )
Specification Value
Chemical Composition NaCr2O7.2H2O (%) ≥98
SO4 (%) ≤0.4
Cl (%) ≤0.15
Fe (%) ≤0.15
Water Insolubles (%) ≤0.01 China Sodium Dichromate Dehydrate Manufacturer
website:http://www.changyuancorp.com/chromium/sodium-dichromate-dehydrate/

  • Created: 14-08-20
  • Last Login: 14-08-20

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