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Crocein Scarlet 7B

Name: Crocein Scarlet 7B
Brand: SIGMA

Powder

Synonym(s):

Acid Red 71

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About This Item

Linear Formula:

C₂₄H₁₈N₄O₇S₂Na₂

CAS Number:

6226-76-2

Molecular Weight:

584.53

Colour Index Number:

27165

UNSPSC Code:

12171500

PubChem Substance ID:

24893109

NACRES:

NA.47

MDL number:

MFCD00056588

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Properties

Product Name

Crocein Scarlet 7B,

form

powder

Quality Segment

200

composition

Dye content, ~65-85%

color

red to brown

solubility

H₂O: 1 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na].Cc1cc(ccc1\N=N\c2c(O)ccc3cccc(c23)S(O)(=O)=O)\N=N\c4ccc(cc4C)S(O)(=O)=O

InChI

1S/C24H20N4O7S2.Na.H/c1-14-12-17(25-26-20-10-8-18(13-15(20)2)36(30,31)32)7-9-19(14)27-28-24-21(29)11-6-16-4-3-5-22(23(16)24)37(33,34)35;;/h3-13,29H,1-2H3,(H,30,31,32)(H,33,34,35);;/b26-25+,28-27+;;

InChI key

HJEUGBJDHUTXMF-NPYGFOBASA-N

Description

Biochem/physiol Actions

Crocein Scarlet 7B (acid red 71) is used in Crowle′s reagent. The reagent is needed for observing latent fingerprints, particularly bloody prints.

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This Item	B6008	199737	R4127
Sigma-Aldrich C8822 Crocein Scarlet 7B	Sigma-Aldrich B6008 Ponceau BS	Sigma-Aldrich 199737 New Coccine	Sigma-Aldrich R4127 Rhodamine 6G
color red to brown	color red to brown	color -	color -
application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology
form powder	form powder	form powder	form powder
solubility H₂O: 1 mg/mL	solubility ethanol: 1 mg/mL, H₂O: >30 mg/mL	solubility water: 1 mg/mL, clear	solubility H₂O: 1 mg/mL (Red to Very Dark Red)
composition Dye content, ~65-85%	composition Dye content, ≥55%	composition Dye content, 75%	composition Dye content, ~95%
storage temp. room temp	storage temp. room temp	storage temp. room temp	storage temp. room temp

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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