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.
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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)
Supplier: Salt and salt chemicals, sodium chloride (salt), sodium sulphate, sodium sulfite, sodium bisulfite, sodium carbonate (soda ash), sodium metabisulphite
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Buyer: Soda ash, gypsum, glycerine, dyes, pigment
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Supplier: Sodium silicate, sodium silicate lumps, sodium silicate cullet, sodium silicate glass, water glass, sodium silicate neutral, sodium silicate alkaline, sodium silicate neutral glass, sodium silicate liquid, sodium silicate powder, potassium silicate, potassium silicate glass, potassium silicate cullet, potassium silicate lumps, potassium silicate liquid, metasilicate
Product Brief Introduction: with the largest consumption for construction and building materials. It is mainly used as enamel fluxing agent, glass opalizing agent, acid-proof clay, acid-proof concrete coagulator and wood preservative. It can also be used for insecticide. Product Hazard or Harmful Ingredients:It does not combust or explode but has corrosivity and certain toxicity. Product Physical Properties:The product is white powder crystals and basically neutral. It is difficult to dissolve in water and acid and the density is 2.37g/cm3. Product Chemical Properties:It is stable under normal temperature. It does not combust nor explode when it is heated or contacts with redox materials. Spillage Treatment Method:Simple cleaning and burying Protection Measures for Product Transport & Storage:To prevent from caking and going bad, it should be kept indoor or be covered with protection materials like canvas and free from the blazing sun. Packing :Knitted bags lined polyethylene plastic bags double packaging, Weighing 25Kg/50KG/1000Kg/1200kg. Other Information: Anti-caking agent can be added at the request of customers. Technical Specifications Analysis items Standard Na2SiF6 99% min Loss of weight on drying at 105â?? 0.3% max Free acid (as HCl) 0.1% max Chloride (as Cl) 0.1% max Sulphate (SO4) 0.3% max Iron(Fe) 0.02% max Water-insoluble matter 0.5% max Particle size distribution Passing through 40 mesh sieve 98% min Passing through 60 mesh sieve 90% min Passing through 325 mesh sieve 25% max
1. Product Functions and Features Sodium Selenite is a supplement of selenite for animal nutrition. The product has stable quality and good liquidity and is easy to mix process. 2.  Introduction Mixed feed additives and sodium selenite. The additive of microelement selenite in feed. Usage & Dosage:The recommended amount in the compound feed(calculated by Selenite mg/kg)0.1-0.3mg for livestock,0.1-0.3mg for fishes. 3. Appearance Light Grey Powder 4. Product quality standard 1%selenite 5%  selenite Sodium selenite (counted by Se)% 1 ±0.05 5 ±0.10 Moisture % 5 Pass 450 m test sieve% 95 Total arsenic content (counted by As)% 0.0005 Lead content (counted by Pb)% 0.002 Cadmium content (counted by Cd)% 0.001 5.Packing:25kg/bag 6. Storage conditions, methods and precautions: stored in cool and dry places, and used up as soon as possible once unpacked.
Product Name: Sodium permanganate Use level: Industrial Content: 40 (%) CAS Number: 10101-50-5 Molecular formula:NaMnO4 Molecular Weight: 141.93 Appearance: purple liquid. A density of 1.36 ~ 1.39 g / cm3, soluble in water, ethanol and ether, soluble in liquid ammonia. Decomposition in alkali. Strong oxidizing. And chemical properties similar to potassium permanganate. Purposes: as oxidants, disinfectants, fungicides and phosphorous antidotes. Toluene is also used to manufacture saccharin, o-toluene sulfonamide and organic synthesis and purification of phenol wastewater treatment. Can be used for circuit boards, metal surface cleaning, the conductive film cleaning to remove grease, electrolytic manganese dioxide, chemical fiber finishing, electroplating addition to hydrogen sulfide and other odors, as well as water treatment and so on. Packaging and storage: Industrial Pails barrel, net weight 25kg plastic drum, 250kg steel-plastic composite barrels, 1250kg IBC barrels packaging. Store in a cool dry place. Quality Standard: Â Items index Sodium permanganate (NaMnO4) Content / (%) 40 Water-insoluble content / (%) 0.01 Potassium (K) content / (%) 0.22 pH value 6 ?8 Density / (g/cm3) 1.36 1.39 Chloride (Cl) content / (%) 0.02
