Chloroantine fast red 5B
direct red 81
CAS: 2610-11-9
Molecular Formula: C29H19N5Na2O8S2
Chloroantine fast red 5B - 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+; |
Chloroantine fast red 5B - 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. |
Chloroantine fast red 5B - Risk and Safety
| WGK Germany | 3 |
| RTECS | QK1370000 |
Chloroantine fast red 5B - Upstream Downstream Industry
| Raw Materials | P-PHENYLAZOBENZENESULFONIC ACID Benzoyl J acid Benzoyl J acid 4'-Aminoazobenzene-4-sulphonic acid |
Chloroantine fast red 5B - 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
Chloroantine fast red 5B - 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
Supplier List
Spot supply
Product Name: Direct Red 81 Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
Spot supply
Product Name: Direct Red 81 Visit Supplier Webpage Request for quotationCAS: 2610-11-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for Chloroantine fast red 5B