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Pigment Yellow 42

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Name

Pigment Yellow 42

EINECS 257-098-5
CAS No. 51274-00-1 Density 5.24 g/cm3
PSA LogP
Solubility Melting Point 1538 °C
Formula Fe2O3.H2O Boiling Point
Molecular Weight 177.71 Flash Point >230 °F
Transport Information Appearance lemon yellow to brown powder
Safety 26 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 51274-00-1 (Pigment Yellow 42) Hazard Symbols IrritantXi
Synonyms

AC 2544;AZ138;Ariabel Yellow 300407;Bayferrox 3910;Bayferrox 3950;Bayferrox 420;Bayferrox 920;Bayferrox 930;Bayferrox Yellow 420;Burnt Sienna TY;C 7055;CM 3FA70ERH;CWD 8942;Cappoxyt Yellow 4214;Dittany Y 77492;EC 481;GA 7311;Goethite yellow;Iron Oxide Orange Transparent 188VN;Iron Oxide Yellow 214501;Iron Oxide Yellow 420;Iron OxideYellow Transp. 088VN;Iron hydroxide oxideyellow;L 1;L 1916;L 1918;LL 100PD;Mapico Yellow 1050;Mapico Yellow 5;Oxide Yellow 3910;PW 895;PY 42;R 131CN;Sicoflush P Yellow 1916;Sicotrans Gold L 1916;Sicotrans Yellow L 1918;Sicovit Yellow 10;Syn-Ox HTR 820;Synthetic yellow iron oxidepigment;Tarox Yellow Lemon;Timbasol PW 895;TodaColor Y 2;Toda Yellow 48;Unipure LC 182;Unisperse Yellow Oxide M-S;YB 3100;YO 2087;YZ 1688;Yellow YB 3100;Zh 1;Yellow iron oxide;

 

Pigment Yellow 42 Specification

The systematic name of C.I. Pigment Yellow 42 is Bayferrox 920. With the CAS registry number 51274-00-1, it is also named as Ferric oxide Yellow. The product's categories are Inorganic & Organic Chemicals; UVCBs-inorganic, and the other registry numbers are 105478-30-6; 12000-32-7; 12001-03-5; 131462-81-2; 1342-51-4; 147625-38-5; 182761-12-2; 185464-57-7; 50641-37-7; 51109-85-4; 53028-10-7; 94809-98-0; 99241-66-4. Besides, it is lemon yellow to brown powder, which should be  sealed in an ventilated, dry warehouse. In addition, its molecular formula is Fe2O3.H2O and molecular weight is 177.71.

Preparation of C.I. Pigment Yellow 42: first, you can use Sulfuric acid to react with iron to get Ferrous sulfate. Then add concentrated sulfuric acid and sodium chlorate to produce Ferric sulfate by oxidation. Afterwards, add Ferric sulfate to the solution of Sodium hydroxide. And then you can add Ferrous sulfate and iron. At last, you would obtain this chemical after surface treatment, washing, filtrating, drying.
Fe+H2SO4→FeSO4+H2
6FeSO4+NaClO3+3H2SO4→3Fe2(SO4)3+NaCl+3H2O
Fe2(SO4)3+6NaOH→2Fe(OH)3+3Na2SO4
3Fe(OH)3→Fe2O3.H2O+2H2O

Uses of C.I. Pigment Yellow 42: this product is used for coloring of manu-marble and waterstone in the construction industry. It is also used as pigment of watercolors, greasepaint, paint and rubber. Moreover, it can be used as an intermediate for the manufacture of iron oxide red, iron black and so on.

When you are using this chemical, please be cautious about it as the following: it is irritating to eyes, respiratory system and skin. In case of contact with eyes, please rinse immediately with plenty of water and seek medical advice.

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