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C8822

Sigma-Aldrich

Crocein Scarlet 7B

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Synonym(s):
Acid Red 71
Linear Formula:
C24H18N4O7S2Na2
CAS Number:
Molecular Weight:
584.53
Colour Index Number:
27165
MDL number:
PubChem Substance ID:

form

powder

Quality Level

composition

Dye content, ~70%

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

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This Item
B6008199737R4127
Crocein Scarlet 7B

Sigma-Aldrich

C8822

Crocein Scarlet 7B

Ponceau BS Dye content ~60 %

Sigma-Aldrich

B6008

Ponceau BS

New Coccine Dye content 75 %

Sigma-Aldrich

199737

New Coccine

Rhodamine 6G Dye content ~95 %

Sigma-Aldrich

R4127

Rhodamine 6G

composition

Dye content, ~70%

composition

Dye content, ~60%

composition

Dye content, 75%

composition

Dye content, ~95%

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, dark red

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

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Bell S
A Dictionary of Forensic Science (2012)

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