CROCEIN SCARLET 7B
CROCEIN SCARLET 7B Basic information
- Product Name:
- CROCEIN SCARLET 7B
- Synonyms:
-
- CROCEIN SCARLET 7B
- CI 27165
- CI NO 27165
- ACID RED 71
- ACID ORANGE 12
- CROCEIN SCARLET 7B C.I. NO. 27165
- 1-Naphthalenesulfonic acid, 7-hydroxy-8-2-methyl-4-(2-methyl-4-sulfophenyl)azophenylazo-, disodium salt
- C.I. ACID RED 71)
- CAS:
- 6226-76-2
- MF:
- C24H18N4Na2O7S2
- MW:
- 584.53
- EINECS:
- 612-981-8
- Mol File:
- 6226-76-2.mol
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CROCEIN SCARLET 7B Chemical Properties
- Melting point:
- 181-188℃
- form
- Powder
- Colour Index
- 27165
- Water Solubility
- Soluble in water
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Safety Information
- Safety Statements
- 22-24/25
- WGK Germany
- 3
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CROCEIN SCARLET 7B Usage And Synthesis
Uses
Crocein Scarlet 7B is used in Crowle’s reagent. The reagent is needed for observing latent fingerprints, particularly bloody prints. Dyes and metabolites.
Preparation
2′,3-Dimethyl-4-amino-4′-sulfoazobenzene?diazo, and 7-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications
red. Soluble in water for product red, soluble in ethanol for red orange. The strong sulfuric acid for blue, pink is diluted. In water solution to join strong hydrochloric acid for product red; Add thick sodium hydroxide solution for shallow red sauce.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 5-6 | 2-3 | 2-3 | 2 | 1 | 2-3 | ||
CROCEIN SCARLET 7BSupplier
Tianjin heowns Biochemical Technology Co., Ltd.
- Tel
- 400 638 7771
- sales@heowns.com
Spectrum Chemical Manufacturing Corp.
- Tel
- 021-021-021-67601398-809-809-809 15221380277
- marketing_china@spectrumchemical.com
Alfa Chemistry
- Tel
- 1-516-6625404
- support@alfa-chemistry.com
Shanghai YuanYe Biotechnology Co., Ltd.
- Tel
- 021-61312847; 18021002903
- 3008007409@qq.com
Tianjin heowns Biochemical Technology Co., Ltd.
- Tel
- 400-638-7771 18920564737
- sales@heowns.com
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CROCEIN SCARLET 7B(6226-76-2)Related Product Information
- ACID RED 80
- 1-Naphthalenesulfonic acid, 4-amino-3-[2-(4-nitrophenyl)diazenyl]-, sodium salt (1:1)
- Solvent Orange 2
- O-AMINOAZOTOLUENE
- O-TOLUIDINE-4-SULFONIC ACID SODIUM SALT
- Solvent Red 24
- CROCEIN SCARLET 7B
- 2-Aminotoluene-5-sulfonic acid
- 4'-Aminoazobenzene-4-sulphonic acid
- ACID RED 151
- Solvent Red 23
- CROCEIN SCARLET
- Acid Red 73
- Acid Red 18
- 7-hydroxynaphthalene-1-sulphonic acid
- Acid Scarlet Red
- CALCOCID CROCEIN SCARLET MOO
- BRILLIANT CROCEIN SCARLET 3BA