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Sodium chromate is the inorganic compound with the formula na2cro4. It exists as a yellow hygroscopic solid, which can form tetra-, hexa-, and Decahydrates. It is an intermediate in the extraction of chromium from its Ores. Sodium chromate, like other hexavalent chromium compounds, is toxic and Carcinogenic. [uses] Aside from its central role in the production of chromium from its ores, Sodium chromate is used as a corrosion inhibitor in the petroleum industry. It is also a dyeing auxiliary in the textile industry and a wood preservative. It is a diagnostic pharmaceutical in determining red blood cell volume. In organic chemistry, sodium chromate is used as an oxidant, converting Primary alcohols to carboxylic acids and secondary alcohols to ketones. Properties Chemical formula, na2cro4 Molar mass, 161.97 g/mol Appearance, yellow crystals Odor, odorless Density, 2.698 g/cm3 Melting point, 792 c (anhydrous) 20 c (decahydrate) Solubility in water, 31.8 g/100 ml (0 c) 84.5 g/100 ml (25 c) 126.7 g/100 ml (100 c) Solubility, slightly soluble in ethanol Solubility in methanol, 0.344 g/100 ml (25 c)
Sodium Chromate(CAS:7775-11-3)
Sodium chlorate Quality index: Control project Indicators Type Type grade qualified grade appearance White or yellowish crystals sodium chlorate(as dry basis), % 99.0 99.0 98.0 moisture, % 0.30 0.50 0.80 water insoluble, % 0.02 0.03 0.03 chloride( CL), % 0.20 0.20 0.30 sulfate(SO4), % 0.10 0.02 chromate(CrO4), % â?¤ 0.01 0.02 ferrum (Fe), % 0.005 0.05 To use: Used for manufacturing chlorine dioxide (can do tap water treatment), sodium chlorite and other chlorate, perchlorate Used in herbicide, oxidant, paper making, printing and dyeing, tanning leather, explosive, printing ink manufacturing Used for match, fireworks, medicine, metallurgical ore treatment and bromine extraction from sea water Packing:  25kg plastic woven bag 1000Kg woven bag
Supplier: Sodium di chromate, pulp, poly propylene, chromium sulphate
Magenta crystal, delirious, decomposed when heated to 125.5, melting point 60.Soluble in water, soluble in ethanol, acetone and inorganic acids.Its aqueous solution appears green when heated, and turns reddish purple quickly after cooling.Corrosive and can cause burns.Contact with flammable materials can cause combustion. USES: used for preparing chrome-containing catalyst, used as coal dyeing agent in printing and dyeing industry, used as glass and ceramic glaze color and corrosion inhibitor.
Molecular formula: CrCl3·6H2O molecular weight: 266.45 Properties: dark green monoclinal crystal, specific gravity 1.835, sublimation at 83;Soluble in water and ethanol;Insoluble in ethyl ether, deliquescence.
Product introduction: Molecular formula: Cr3(OHx)(HCOO)y x+y=9 molecular weight: 187.14 Description: dark green crystals or crystalline powder.300-400 decomposition into Cr2O3. Application: mainly used for tanning leather, mordant dyeing and trivalent chromium plating.And film and photography.It can also be used as chemical reagent, olefin polymerization catalyst, oxidation catalyst, used for latex hardening, drilling slurry, dye industry as complexing agent, electroplating industry with trivalent chromium.
Formula CrO3, relative molecular mass of 99.994, this product is a dark red flakes, melting point 197 (decomposition), specific gravity of 2.70 g/cm3, has the strong oxidizing, deliquescence and highly soluble in water, with organic contact friction can cause burning, poisonous.Packed in sealed in barrel, a barrel in net weight 50 kg, 100 kg or 200 kg (according to customer requirements).
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.
