ChemicalBook > CAS DataBase List > CROCEIN SCARLET 7B

CROCEIN SCARLET 7B

Product Name
CROCEIN SCARLET 7B
CAS No.
6226-76-2
Chemical Name
CROCEIN SCARLET 7B
Synonyms
CI 27165;ACID RED 71;CI NO 27165;ACID ORANGE 12;Acid Crimson 7B;C.I. ACID RED 71);CROCEIN SCARLET 7B;Croceine Scarlet 7B;C.I.Acid Red 71:C.I.27165;CROCEIN SCARLET 7B C.I. NO. 27165
CBNumber
CB8105888
Molecular Formula
C24H18N4Na2O7S2
Formula Weight
584.53
MOL File
6226-76-2.mol
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CROCEIN SCARLET 7B Property

Melting point:
181-188℃
storage temp. 
room temp
form 
Powder
Colour Index 
27165
color 
red to brown
Water Solubility 
Soluble in water
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Safety

Safety Statements 
22-24/25
WGK Germany 
3
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
C8822
Product name
Crocein Scarlet 7B
Packaging
1g
Price
$26.4
Updated
2025/07/31
Sigma-Aldrich
Product number
C8822
Product name
Crocein Scarlet 7B
Packaging
5g
Price
$72.9
Updated
2025/07/31
Sigma-Aldrich
Product number
C8822
Product name
Crocein Scarlet 7B
Packaging
25g
Price
$267
Updated
2025/07/31
TRC
Product number
C794960
Product name
Crocein Scarlet 7B
Packaging
2.5g
Price
$90
Updated
2021/12/16
Usbiological
Product number
236975
Product name
Crocein Scarlet 7B
Packaging
5g
Price
$186
Updated
2021/12/16
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CROCEIN SCARLET 7B Chemical Properties,Usage,Production

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 fingerprints, particularly 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

CROCEIN SCARLET 7B Preparation Products And Raw materials

Raw materials

Preparation Products

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CROCEIN SCARLET 7B Suppliers

China 29 Europe 2 Germany 1 India 1 Switzerland 1 United Kingdom 2 United States 9 Global 45
ecochem international chemical broker
Tel
--
Fax
--
Email
export@ecochem.dk
Country
Europe
ProdList
6371
Advantage
66
kemikalieimport
Tel
--
Fax
--
Email
Sales@kemikalieimport.dk
Country
Europe
ProdList
6685
Advantage
47

6226-76-2, CROCEIN SCARLET 7BRelated Search:

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

  • 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)
  • 7-Hydroxy-8-[[2-methyl-4-[(2-methyl-4-sodiosulfophenyl)azo]phenyl]azo]naphthalene-1-sulfonic acid sodium salt
  • Croceine Scarlet 7B
  • CROCEIN SCARLET 7B ISO 9001：2015 REACH
  • C.I.Acid Red 71:C.I.27165
  • Acid Crimson 7B
  • 6226-76-2
  • C24H18N4O7S2Na2