131-92-0
Vat Brown 3
CAS: 131-92-0
Molecular Formula: C42H23N3O6
131-92-0 - Names and Identifiers
| Name | Vat Brown 3 |
| Synonyms | Vatbrown C.I. 69015 Vat Brown R Vat Brown 3 Vat Brown 3 C.I.Vat Brown 3 C.I. VAT BROWN 3 C.I. Vat Brown 3 Calcoloid Brown R. C.I. Pigment Brown 28 Vat brown 3 (C.I. 69015) |
| CAS | 131-92-0 |
| EINECS | 2050446 |
| InChI | InChI=1/C42H23N3O6/c46-37-24-14-7-8-15-25(24)38(47)34-33(37)30(44-42(51)22-12-5-2-6-13-22)20-28-23-18-19-27-32(35(23)45-36(28)34)40(49)26-16-9-17-29(31(26)39(27)48)43-41(50)21-10-3-1-4-11-21/h1-20,45H,(H,43,50)(H,44,51) |
131-92-0 - Physico-chemical Properties
| Molecular Formula | C42H23N3O6 |
| Molar Mass | 665.659 |
| Density | 1.537 |
| Boling Point | 685.54°C (rough estimate) |
| Refractive Index | 1.7800 (estimate) |
| Physical and Chemical Properties | solubility: slightly soluble in xylene; Dark wine red in concentrated sulfuric acid, red light brown flocculent precipitation after dilution; Red light yellow in alkaline sodium hydrosulfite solution, light brown in case of acid. hue or shade: Red light brown |
| Use | The pigment species belongs to the anthraquinone carbazole derivative, which is composed of C.I. Reduced Brown 3 is obtained by pigment treatment, giving a red light brown tone, with excellent light resistance, fastness to climate and heat stability; Mainly used for industrial paint coloring, can also be used for high-grade printing ink and plastic coloring. |
131-92-0 - Reference Information
| chemical properties | dark brown powder. Insoluble in water, slightly soluble in xylene. It is dark wine red in concentrated sulfuric acid, and red-brown flocculent precipitate is produced after dilution. It is red and brown in alkaline solution of hydrosulfite and yellow and brown in acidic solution. |
| use | reduced brown r is mainly used for dyeing cotton fiber, with good levelness and affinity. It is also used for dyeing blended fabrics such as polyester cotton, polyester viscose, vitamin cotton, etc. The polyester components are slightly stained. It can be dyed by hot melt method in the same bath with disperse dyes, or by two-bath method. It can also be combined with reduced brown G, reduced brown GG, reduced brown BR, etc. to dye brown with different shades of light and color, and is also used to prepare organic pigments. mainly used for dyeing cotton and polyester/cotton blended fabrics |
| Production method | Using 1-bromo-4-benzoylaminoanthraquinone and 1-amino-5-benzoylaminoanthraquinone as raw materials, first The two are condensed in the presence of anhydrous sodium acetate, cyclized with fuming sulfuric acid, and oxidized with sodium hypochlorite to obtain the product. The finished product is filtered, crushed and dried.. |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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