Chemical Formula: Na2Cr2O7·2H2O, molecular weight: 298.00.
Bright orange monoclinic needle shaped or granular crystal, dehydrated to copper-brown substance at 84.6.
Deliquesces readily in air, and easily soluble in water, forming an acidic orange solution. A strong oxidizing agent in an acidic medium. Poisonous.
Application
Mainly used in the manufacture of chromium anhydride, yellow pigments and other chromate salts.
Also used in leather tanning, textile dyeing, electroplating, medicine, lipids, oil-well drilling and wood preservation etc.
Packaging
In reinforced-type composite plastic woven bags, net weight for each: 25kg, or 40kg.
Notice
1. Avoid moisture, heat and shock during storage and transportation. Keep away from combustibles.
2. Do not store with foodstuff or strong reducers.
3. Avoid contacting with eyes and skin.
4. Personal protective appliance should be equipped with, such as self-suction respirator, acid-proofing rubber gloves, security coat and boot, chemical-resistant protective glasses.
5. In case of leakage, reduce with 10% sulfuric acid and ferrous sulfate, and neutralize with calcium oxide immediately.
CAS No.:7789-12-0 UN No.:3086
Executive Standard
GB/T1611/2003
Items Standard
Na2Cr2O7-2H2O 98.3%min
Sulfate(SO4) 0.30%max
Chloride(CL) 0.10%max
Sodium Dichromate also known as Sodium Bichromate is used in a variety of industrial applications like as an oxidizing agent (to make dyes, inks, and other chemicals), bleaching agent (fats, oils, sponges, and resins), tanning agent, and mordant in dyeing; Also used in electric batteries, for refining petroleum, electro-engraving copper, in corrosion inhibitors and corrosion inhibiting paints, metal treatments, hardening gelatin, defoliation of cotton and other plants and shrubs, and as a topical anti-infective; Used for metal finishing (chrome plating, electroplating, passivating, anodizing, and brightening), to make vitamin K, colored glass, ceramic glazes, essential oils, and perfumes. Sales Specification Appearance: Orange-red mono-slanting corrugation crystallization or fine needle crystallization. Assay (Na2Cr2O7.2H2O): 98.5% Min Sulphate (SO4 2-): 0.3% Max Chloride(Cl-): 0.05% Max Iron (Fe): 0.006% Max. Water solubles: 0.01 Max. Packing 110.23 Lb drums, 18 drums per pallet DOT Transportation UN/NA: 3288 Proper Shipping Name: Toxic solid, inorganic, n.o.s. (Sodium dichromate) Hazard Class: 6.1 (Poisonous material) Packing Group: III RQ The Reportable Quantity (RQ) under CERCLA is 10 lbs
The common name is sodium chromate, molecular formula na2cr2o7.2h2o, relative molecular mass 298.00, the dihydrate is bright orange monoclinal needle-like or small granular crystal, forming copper-brown anhydrous substance after dehydration in 84.6.In the air, it is easily deliquescent and soluble in water, forming an orange solution whose aqueous solution is acidic.In acidic medium, sodium dichromate is a strong oxidant and toxic.25kg, 40kg and 50kg reinforced woven bags are packed with inner plastic bags.
(Na2Cr2O7â?¢2H2O) 98.3%min Sulfate(SO4) 0.30%max Chloride(CL) 0.10%max Packaging:In pp woven bags, 25kg,50kg or 1000kg net.
Sodium dichromate is the inorganic compound with the formula Na2Cr2O7. Usually, however, the salt is handled as its dihydrate Na2Cr2O7·2H2O. Virtually all chromium ore is processed via conversion to sodium dichromate and virtually all compounds and materials based on chromium are prepared from this salt. In terms of reactivity and appearance, sodium dichromate and potassium dichromate are very similar. The sodium salt is, however, around twenty times more soluble in water than the potassium salt (49 g/L at 0 °C) and its equivalent weight is also lower, which is often desirable.[2]
Product Character Chemical Formula: Na2Cr2O72H2O, molecular weight: 298.00. Bright orange monoclinic needle shaped or granular crystal, dehydrated to copper-brown substance at 84.6 degree celsius. Deliquesces readily in air, and easily soluble in water, forming an acidic orange solution. A strong oxidizing agent in an acidic medium. Poisonous. Application Mainly used in the manufacture of chromium anhydride, yellow pigments and other chromate salts. Also used in leather tanning, textile dyeing, electroplating, medicine, lipids, oil-well drilling and wood preservation etc. Notice 1. Avoid moisture, heat and shock during storage and transportation. Keep away from combustibles. 2. Do not store with foodstuff or strong reducers. 3. Avoid contacting with eyes and skin. 4. Personal protective appliance should be equipped with, such as self-suction respirator, acid-proofing rubber gloves, security coat and boot, chemical-resistant protective glasses. 5. In case of leakage, reduce with 10% sulfuric acid and ferrous sulfate, and neutralize with calcium oxide immediately. [quality standard]:GB1611--2003 Items Standard (Na2Cr2O72H2O) 98.3%min Sulfate(SO4) 0.30%max Chloride(CL) 0.10%max Packaging:In pp woven bags, 25kg,50kg or 1000kg net.
Purity must be min. 99% Packed in 25 kgs bag
Sodium Dichromate(CAS:10588-01-9)
Sodium Dichromate(CAS:10588-01-9, 7789-12-0)
Supplier: Sodium dichromate
