C.I. Direct Red 81 (7CI)
direct red 81
CAS: 2610-11-9
Molecular Formula: C29H19N5Na2O8S2
C.I. Direct Red 81 (7CI) - Names and Identifiers
| Name | direct red 81 |
| Synonyms | C.I. 28160 direct red 81 Solaminrot 4B Direct Red 81 Chlorantine Fast Red 5B C.I. Direct Red 81 (7CI) Chloroantine fast red 5B C.I. Direct Red 81 (VAN) C.I. Direct Red 81 disodium salt C.I. Direct Red 81, disodium salt disodium 4-hydroxy-7-[(phenylcarbonyl)amino]-3-[(E)-{4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]naphthalene-2-sulfonate |
| CAS | 2610-11-9 |
| EINECS | 220-028-9 |
| InChI | InChI=1/C29H21N5O8S2.2Na/c35-28-25-15-12-23(30-29(36)18-4-2-1-3-5-18)16-19(25)17-26(44(40,41)42)27(28)34-33-21-8-6-20(7-9-21)31-32-22-10-13-24(14-11-22)43(37,38)39;;/h1-17,35H,(H,30,36)(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2/b32-31+,34-33+; |
C.I. Direct Red 81 (7CI) - Physico-chemical Properties
| Molecular Formula | C29H19N5Na2O8S2 |
| Molar Mass | 675.6 |
| Melting Point | 240℃ |
| Storage Condition | Room Temprature |
| MDL | MFCD00003949 |
| Physical and Chemical Properties | Chemical brown powder. Good water solubility, soluble in ethylene glycol ether, slightly soluble in ethanol, insoluble in other organic solvents. Its aqueous solution is magenta, adding concentrated hydrochloric acid to produce yellow olive brown precipitate, adding concentrated alkali to produce purple precipitate. It is dark blue in concentrated sulfuric acid, and it produces light orange-brown precipitate after dilution; it is bright blue in concentrated nitric acid and turns red and light brown. In dyeing, the color light of iron ions is basically unchanged, and the color light of copper ions is slightly darker. |
| Use | Use Direct sun-resistant red 4B is used for dyeing and direct printing of cotton and viscose fabric, and the ground color is dyed blue and red. It has good dyeing and levelness, good hiding power for viscose filaments with uneven quality, and poor dyeing rate. It is also used for dyeing silk and high-temperature dyeing polyester-viscose blended fabrics in the same bath with disperse dyes. |
C.I. Direct Red 81 (7CI) - Risk and Safety
| WGK Germany | 3 |
| RTECS | QK1370000 |
C.I. Direct Red 81 (7CI) - Upstream Downstream Industry
| Raw Materials | P-PHENYLAZOBENZENESULFONIC ACID Benzoyl J acid Benzoyl J acid 4'-Aminoazobenzene-4-sulphonic acid |
C.I. Direct Red 81 (7CI) - Nature
| color index | 28160 |
| EPA chemical information | C. I. Direct Red 81 disodium salt (2610-11-9) |
Last Update：2024-04-10 22:29:15
C.I. Direct Red 81 (7CI) - Production method
Using p-aminoazobenzene sulfonic acid and N-benzoyl J acid as raw materials, the p-aminoazobenzene sulfonic acid is first diazotized, and then coupled with N-benzoyl J acid to obtain the product. The finished product is salted out, filtered, dried and crushed.
Last Update：2024-04-10 22:29:15
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Featured ProductsSpot supply
Product Name: Chlorantine Fast Red 5B Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: +86-18821248368
Email: Int06@meryer.com
Mobile: +86-18821248368
QQ: 495145328
WhatsApp: +86-18821248368
Spot supply
Product Name: Direct Red 81 Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: 609-228-6898
Email: sales@medchemexpress.com
tech@medchemexpress.com
Mobile: 609-228-6898
Spot supply
Product Name: Chlorantine Fast Red 5B Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Spot supply
Product Name: Direct Red 81 Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
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View History
C.I. Direct Red 81 (7CI)
3-乙酰硫基-2-甲基丙酸
4-甲基-2-巯基嘧啶盐酸盐
5,5-二甲基-3-氧代环己-1-烯-1-基乙酸酯
L-ALPHA-LYSOPHOSPHATIDYLCHOLINE, MYRISTOYL
4-氮杂螺[4-]辛烷-7-羧酸甲酯
6-三甲基吡啶)六氟磷酸碘盐
2-氟-3-甲磺酰基苯甲酸
1-甲基亚乙基双(4,1-苯氧基-2,1-亚乙基)双乙酸酯
索拉非尼氨基苯氧基杂质
3-乙酰硫基-2-甲基丙酸
4-甲基-2-巯基嘧啶盐酸盐
5,5-二甲基-3-氧代环己-1-烯-1-基乙酸酯
L-ALPHA-LYSOPHOSPHATIDYLCHOLINE, MYRISTOYL
4-氮杂螺[4-]辛烷-7-羧酸甲酯
6-三甲基吡啶)六氟磷酸碘盐
2-氟-3-甲磺酰基苯甲酸
1-甲基亚乙基双(4,1-苯氧基-2,1-亚乙基)双乙酸酯
索拉非尼氨基苯氧基杂质
Raw Materials for C.I. Direct Red 81 (7CI)