Basic chromium sulphate, often used in leather tanning process. We are leading Exporter of basic chromium sulphate from India. We have both 23% and 26% grades. Details are as follow:
Package: 25kg plastic weaving bag
Quantity/fcl: 20mts
Non-hazardous goods
Appearance: dark green powder
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
Basic Chromium Sulphate
DESCRIPTION A light green free flowing powder. USES I. Used as water treatment chemical, Micronutrient and wood preservative. 2. Used as a fungicide on avocados, citrus fruits, grapes, kiwi fruit, onions, peas, potatoes, stone fruit. PACKING LDPE lined HDPE bags of 25 kgs. As per customer's requirement in bulk bag up to I MT in big sack. CHEMICAL ANALYYSIS PARAMETERS OUR STANDARD Assay as CuSO4.3Cu(OH)2.H2O % m/m 5 1.5 % m /m min. Matter insoluble in water % m/m 0.2 % m /m max. pH of I % solution 5-7 Lead as 'Pb' ppm 260 ppm max. Arsenic as 'As' ppm 52 ppm max. Cadmium as 'Cd' ppm 52 ppm max. Moisture % m /m 2.0 % m /m max. Bulk density About 0.55 gr./ c.c. Wet sieve test (on 325 mesh test sieve) 2.0 % m /m max. Stability 540 C After storage at 54 +/- 20 C for 14 days, the product shell continue to comply with wet sieve test on 325 mesh.
Technical index: Cr2O3 â?¥20%, 22±1%, 24±1%, 25±1% basalt % : high (45±2)%;PH value (1:10) : 3.4-4.5;Cr6, + 3 PPM or less;Fe 0.1% or less Product characteristics: adopt sugar reduction process, contain certain amount of mono compound, the composition of chromium complex, the charge distribution is reasonable, the composition is more, the cutting has appropriate mono properties, the permeation is strong, the chromium is evenly distributed in the leather, the absorption is much, the complexation is firm, the leather surface is fine, the leather body is flat, the hand feeling is plump, the elasticity is good.
Basic Chromium Sulphate
Basic chromium sulfate is produced from chromate salts by reduction with sulfur dioxide, although other methods exist. The reduction could formally be written: Na2Cr2O7 + 3 SO2 + H2O Cr2(SO4)3 + 2NaOH Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Products with higher basicities, e.g. 42 or 50% may be obtained by the addition of sodium carbonate, these are often used in combination with sodium formate. The sodium sulfate is often left in the technical product since it is inert with respect to the tanning process. It is important to fully reduce the hexavalent chromium to trivalent since the hexavalent is more likely to cause health problems for tanners and leather consumers.
TRI BASIC LEAD SULPHATE PURITY 87-89 % PbO
Chemical
Zinc Sulphate Heptahydrate Zn 21 %, Monohydrate 33 %, 25% min.
