Zinc chromate hydroxide (Zn5(CrO4)(OH)8)
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Zinc chromate hydroxide (Zn5(CrO4)(OH)8)
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CAS No:
49663-84-5
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Formula:
CrO4.HO.Zn
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Chemical Name:
Zinc chromate hydroxide (Zn5(CrO4)(OH)8)
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Synonyms:
Zinc chromate hydroxide (Zn5(CrO4)(OH)8);Zinc chromate(VI) hydroxide (Zn5(OH)8CrO4);Zinc chromate(VI) (Zn5(OH)8CrO4);Zinc tetrahydroxychromate (ZnCrO4.4Zn(OH)2);Zinc tetraoxychromate;C.I. 77956;C.I. Pigment Yellow 36:1;Pigment Yellow 36:1;Zinc chromate hydroxide (Zn(CrO4)0.2(OH)1.6);ZTO;Zinc Yellow 309;12017-90-2;12343-86-1;146280-42-4
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CAS No:
Zinc chromate hydroxide (Zn5(CrO4)(OH)8) Basic Attributes
579.00242
571.58800
256-418-0
DTXSID30197957
Safety Information
II
6.1(a)
3288
P201, P202, P261, P264, P270, P272, P273, P280, P281, P301+P312, P302+P352, P308+P313, P321, P330, P333+P313, P363, P391, P405, P501
H302
|Danger|H302 (96.15%): Harmful if swallowed [Warning Acute toxicity, oral]|P201, P202, P261, P264, P270, P272, P273, P280, P281, P301+P312, P302+P352, P308+P313, P321, P330, P333+P313, P363, P391, P405, and P501|Aggregated GHS information provided by 52 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Zinc chromate hydroxide (Zn5(CrO4)(OH)8) Use and Manufacturing
It is prepared by reacting zinc oxide with potassium dichromate and sulfuric acid, filtering, separating, drying and crushing. Reaction equation: 4ZnO+H2SO4+2K2Cr2O7+2H2O→4ZnO·4CrO3·K2O·3H2O+K2SO4 Operation method: In a reactor with agitator, make 100 parts of zinc oxide slurry with 8-10 times water, and heat to 80 with steam ~90℃, after cooling, slowly add 150~250g/L potassium dichromate solution and 8.5 parts of sulfuric acid, the feeding time is about 1h, after the addition, fully stir 2~3h below 40℃, then pass, Separate, dry and crush the product.
Inorganic yellow pigment. It is mainly used in the manufacture of rust primers in the paint industry and has good corrosion resistance to metal surfaces. Since zinc chrome yellow is non-toxic, it can be used to make cosmetic pigments for film and television performances. It is also used for coloring plastics, inks, watercolors, oil paints, rubber and other products.
Computed Properties
Molecular Weight:579.0
Hydrogen Bond Donor Count:8
Hydrogen Bond Acceptor Count:12
Exact Mass:577.58038
Monoisotopic Mass:571.58779
Topological Polar Surface Area:88.3
Heavy Atom Count:18
Complexity:62.2
Covalently-Bonded Unit Count:14
Compound Is Canonicalized:Yes
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Zinc chromate hydroxide (Zn5(CrO4)(OH)8)
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