The concept of "dye content" is not rigorously defined. The term was originally defined as the percent by weight of dyes in commercial dyes which were frequently contaminated or purposely diluted with noncolored materials such as inorganic salts, solvents of crystallization, and other additives such as antidusting agents, dispersants, etc. Hence, the term refers to the percent by weight of total dyes in the mixture and should not be confused with dye purity. On a lot-to-lot basis there is no attempt made to identify the non dye constituents of product 368881. As the dye content is not expressed on the current Certificates of Analysis, there is no reasonable method for preparing molar solutions.
368881
Fast Red TR Salt
Dye content 15 %
Synonym(s):
Fast Red TR Salt hemi(zinc chloride) salt, 4-Chloro-2-methylbenzenediazonium salt, Azoic Diazo No. 11
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25 G
$63.70
About This Item
Empirical Formula (Hill Notation):
C7H6Cl2N2 · 0.5 ZnCl2
CAS Number:
Molecular Weight:
257.19
Colour Index Number:
37085
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
Recommended Products
form
powder
Quality Level
composition
Dye content, 15%
λmax
284 nm
ε (extinction coefficient)
≥3000 at 281-287 nm in water at 0.006 g/L
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
[Cl-].[Cl-].Cl[Zn]Cl.Cc1cc(Cl)ccc1[N+]#N.Cc2cc(Cl)ccc2[N+]#N
InChI
1S/2C7H6ClN2.4ClH.Zn/c2*1-5-4-6(8)2-3-7(5)10-9;;;;;/h2*2-4H,1H3;4*1H;/q2*+1;;;;;+2/p-4
InChI key
RIIVFDKBXXMYRL-UHFFFAOYSA-J
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General description
Fast Red TR is a diazonium dye. It serves as a chromogenic substrate for alkaline phosphatase (AP), a common antibody conjugate widely used fin immunohistochemical applications.
Application
Fast Red TR Salt hemi (zinc chloride) salt has been used in the preparation of staining solutions to stain TRACP (tartrate-resistant acid phosphatase). It is also used for the detection of alkaline phosphatase.
signalword
Danger
hcodes
Hazard Classifications
Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1C
Storage Class
8A - Combustible corrosive hazardous materials
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Could you clarify what "dye content 15%" means? What makes up the remaining 85%? Does this indicate that in 100 g of powder, 15 g consists of Fast Red (MW 257.19)? I’d like to understand this better for preparing mM solutions.
1 answer-
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