Acid Red 73
Brilliant Crocein
CAS: 5413-75-2
Molecular Formula: C22H14N4Na2O7S2
Acid Red 73 - Names and Identifiers
| Name | Brilliant Crocein |
| Synonyms | C.I. 27290 Acid Red 73 Acid Red GR Acid red 73 Acid Red 73 C.I. Acid Red 73 Brilliant Crocein Crocein Scarlet MOO brillant crocein MOO Brilliant Crocein MOO C.I. Acid Red 73, disodium salt brilliant crocein moo (C.I. 27290) sodium 6-hydroxy-5-(4-phenylazophenylazo)naphthalene-2,4-disulphonate 7-oxo-8-({4-[(E)-phenyldiazenyl]phenyl}hydrazono)-7,8-dihydronaphthalene-1,3-disulfonate disodium 7-hydroxy-8-[(E)-{4-[(E)-phenyldiazenyl]phenyl}diazenyl]naphthalene-1,3-disulfonate disodium (8Z)-7-oxo-8-(2-{4-[(E)-phenyldiazenyl]phenyl}hydrazinylidene)-7,8-dihydronaphthalene-1,3-disulfonate |
| CAS | 5413-75-2 |
| EINECS | 226-502-1 |
| InChI | InChI=1/C22H16N4O7S2.2Na/c27-19-11-6-14-12-18(34(28,29)30)13-20(35(31,32)33)21(14)22(19)26-25-17-9-7-16(8-10-17)24-23-15-4-2-1-3-5-15;;/h1-13,25H,(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2/b24-23+,26-22+; |
Acid Red 73 - Physico-chemical Properties
| Molecular Formula | C22H14N4Na2O7S2 |
| Molar Mass | 556.48 |
| Water Solubility | Soluble in water |
| Solubility | Soluble in water is a red solution, soluble in alcohol and fibrinolytic, insoluble in acetone, insoluble in other organic solvents |
| Appearance | morphology neat |
| Storage Condition | 2-8℃ |
| MDL | MFCD00003907 |
| Physical and Chemical Properties | Chemical properties yellow light red powder. Soluble in water is a red solution, soluble in alcohol and fibrinolytic, insoluble in acetone, insoluble in other organic solvents. When exposed to concentrated sulfuric acid, it is reddish-purple, and after dilution, it generates reddish-brown precipitate; when exposed to concentrated nitric acid, it is blue, and it turns into olive-brown and orange. Its aqueous solution is added with concentrated hydrochloric acid to generate dark reddish brown precipitate, and sodium hydroxide solution to generate dark brown precipitate. When dyeing, the colors of copper and iron ions are dark. Good extraction and dyeing. |
| Use | Uses for the dyeing of wool fabrics, also used for the dyeing of paper and leather. It can also be used for the coloration of plastics, wood, spices, pharmaceuticals, aluminium and cement. It can also be used in the manufacture of inks. Its heavy metal salts can be used as pigments. |
Acid Red 73 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 32041990 |
Acid Red 73 - Upstream Downstream Industry
| Raw Materials | Sodium sulfate 4-AMINOAZOBENZENE 4-AMINOAZOBENZENE HYDROCHLORIDE 4-AMINOAZOBENZENE 2-Naphthol-6,8-disulfonic acid |
| Downstream Products | Solvent Red 30 |
Acid Red 73 - Nature
| color index | 27290 |
| EPA chemical information | C. I. Acid Red 73, disodium salt (5413-75-2) |
Last Update：2024-04-10 22:29:15
Acid Red 73 - Production method
It is obtained by diazotization of p-amino azobenzene, coupling with G salt, and salting out. 1. Diazotization 240kg of p-amino azobenzene hydrochloride is added to 1200L of water and 200kg of 30% hydrochloric acid is added. Stir for 4 hours, cool to 8 ℃, add 30% sodium nitrite solution (fold 100
Last Update：2024-04-10 22:29:15
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View History
Acid Red 73
RHFGFA
553-72-0
TIANFU-CHEM Soya lecithin
10-Acetoxy-2,8-decadiyn-1-ol
碱性棕 16 [CI 12250]
AA-dUTP sodium salt
QB102
33282-23-4
化合物 T24363
RHFGFA
553-72-0
TIANFU-CHEM Soya lecithin
10-Acetoxy-2,8-decadiyn-1-ol
碱性棕 16 [CI 12250]
AA-dUTP sodium salt
QB102
33282-23-4
化合物 T24363
Raw Materials for Acid Red 73
Sodium sulfate
4-AMINOAZOBENZENE
4-AMINOAZOBENZENE HYDROCHLORIDE
4-AMINOAZOBENZENE
2-Naphthol-6,8-disulfonic acid
4-AMINOAZOBENZENE
4-AMINOAZOBENZENE HYDROCHLORIDE
4-AMINOAZOBENZENE
2-Naphthol-6,8-disulfonic acid
Downstream Products for Acid Red 73