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Safety Information

C8822

Sigma-Aldrich

Crocein Scarlet 7B

Powder

Synonym(s):

Acid Red 71

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About This Item

Linear Formula:
C24H18N4O7S2Na2
CAS Number:
Molecular Weight:
584.53
Colour Index Number:
27165
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Crocein Scarlet 7B,

form

powder

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

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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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

C8822-VAR:
C8822-25G:
C8822-1G:
C8822-5G:
C8822-BULK:


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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