CI 77492
CI 77492
CAS: 64294-91-3
Molecular Formula: α-Fe2o3·H2O
CI 77492 - Names and Identifiers
CI 77492 - Physico-chemical Properties
| Molecular Formula | α-Fe2o3·H2O |
| Physical and Chemical Properties | Chemical nature transparent yellow powder. The density is 3.5g/cm3 and the particle size is 0.01~0.02 μm. The particles are fine and the specific surface area is large, which is 10 times that of ordinary iron oxide. It can strongly absorb ultraviolet rays, and has good light resistance and atmospheric resistance. When light is projected onto a paint film or plastic film containing transparent iron oxide pigment, it is in a transparent state. |
| Use | Uses inorganic pigments. It is used in the manufacture of alkyd paint, amino acid paint, acrylic paint and so on. It is also used to prepare transparent yellow, transparent red and other pigments, coated on reflective substrates such as aluminum foil, electroplating material, etc., from the paint with a false gold-plated feeling, which is widely used in coins, lamps, bicycles, sewing machines, steel furniture, instruments, meters, automobiles, etc. In addition, it is also used in the manufacture of canned inner and outer wall coatings and inks. |
CI 77492 - Upstream Downstream Industry
CI 77492 - Production method
method 1: ferrous sulfate oxidation method. Sulfuric acid and iron are reacted to produce ferrous sulfate, and then sodium chlorate with concentrated sulfuric acid is added to oxidize ferrous sulfate. The produced ferric sulfate is neutralized and precipitated with sodium hydroxide. After adding ferrous sulfate and iron filings, it is converted and washed with water. Surface treatment, filtration, drying and crushing. The reaction equation is as follows:
Fe H2SO4→FeSO4 H2↑
6FeSO4 2NaClO3 3H2SO4→3Fe2(SO4)3 2NaCl H2O
4Fe(OH)2 O2→4FeOOH 2H2O
Fe2(SO4)3 6NaOH→2Fe(OH)3 3Na2SO4
3Fe(OH)3→Fe2O3·H2O↓ 2H2O
Method 2: Organic solvent method. The solvent can be recycled and recycled, reducing pollution emissions. Heating 300ml of ethanol and 45g of ferrous chloride tetrahydrate at 60 ℃ to generate transparent red solution, adding 15g of urine and 5ml of water, refluxing for 3h, can generate 18g of transparent iron oxide yellow.
Last Update：2024-04-10 22:29:15
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Product Name: C.I. Pigment yellow 43 Visit Supplier Webpage Request for quotationCAS: 64294-91-3
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Spot supply
Product Name: C.I. Pigment yellow 43 Visit Supplier Webpage Request for quotationCAS: 64294-91-3
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
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Raw Materials for CI 77492