| Identification | Back Directory | [Name]
CROCEIN SCARLET 7B | [CAS]
6226-76-2 | [Synonyms]
CI 27165
CI NO 27165
ACID RED 71
ACID ORANGE 12
C.I. ACID RED 71)
CROCEIN SCARLET 7B
Croceine Scarlet 7B
CROCEIN SCARLET 7B C.I. NO. 27165
1-Naphthalenesulfonic acid, 7-hydroxy-8-2-methyl-4-(2-methyl-4-sulfophenyl)azophenylazo-, disodium salt
7-Hydroxy-8-[[2-methyl-4-[(2-methyl-4-sodiosulfophenyl)azo]phenyl]azo]naphthalene-1-sulfonic acid sodium salt | [EINECS(EC#)]
217-697-4 | [Molecular Formula]
C24H18N4Na2O7S2 | [MDL Number]
MFCD00056588 | [MOL File]
6226-76-2.mol | [Molecular Weight]
584.53 |
| Chemical Properties | Back Directory | [Melting point ]
181-188℃ | [storage temp. ]
room temp | [Colour Index ]
27165 | [form ]
Powder | [color ]
red to brown | [Water Solubility ]
Soluble in water |
| Hazard Information | Back Directory | [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. | [Biological Activity]
Crocein Scarlet 7B (acid red 71) is used in Crowle′s reagent. The reagent is needed for observing latent fingerprintsparticularly bloody prints. | [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
|
|
|
|
| Company Name: |
Spectrum Chemical Manufacturing Corp.
|
| Tel: |
021-021-021-67601398-809-809-809 15221380277 |
| Website: |
www.spectrumchemical.com/oa_html/index.jsp?minisite=10020&respid=22372&language=us |
| Company Name: |
Alfa Chemistry
|
| Tel: |
1-516-6625404 |
| Website: |
https://www.alfa-chemistry.com |
| Company Name: |
Energy Chemical
|
| Tel: |
021-58432009 400-005-6266 |
| Website: |
http://www.energy-chemical.com |
| Company Name: |
Merck KGaA
|
| Tel: |
(+86) 21 2033 8288 |
| Website: |
http://www.sigmaaldrich.cn |
|