Chromotrope 2R

Modify Date: 2025-08-20 17:18:48

Chromotrope 2R Structure
Chromotrope 2R structure
Common Name Chromotrope 2R
CAS Number 4197-07-3 Molecular Weight 468.369
Density N/A Boiling Point N/A
Molecular Formula C16H10N2Na2O8S2 Melting Point N/A
MSDS Chinese USA Flash Point N/A
Symbol GHS07
GHS07
Signal Word Warning

 Use of Chromotrope 2R


Chromotrope 2R can be used as a chromogenic analytical probe for the quantification of proteins. Basic proteins stained red and the peak wavelength red shifts from 501.6 nm to 567 nm[1].

 Names

Name acid red 29
Synonym More Synonyms

 Chromotrope 2R Biological Activity

Description Chromotrope 2R can be used as a chromogenic analytical probe for the quantification of proteins. Basic proteins stained red and the peak wavelength red shifts from 501.6 nm to 567 nm[1].
Related Catalog
References

[1]. Wagner BM. Correspondence: Chromotrope 2R. Toxicol Pathol. 2003 Nov-Dec;31(6):717.

 Chemical & Physical Properties

Molecular Formula C16H10N2Na2O8S2
Molecular Weight 468.369
Exact Mass 467.967407
PSA 196.34000
LogP 4.63620
Storage condition Store at RT.

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
QJ6418000
CHEMICAL NAME :
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(phenylazo)-, disodium salt
CAS REGISTRY NUMBER :
4197-07-3
LAST UPDATED :
199504
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C16-H12-N2-O8-S2.2Na
MOLECULAR WEIGHT :
470.40

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi
Risk Phrases R36/37/38
Safety Phrases S24/25
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS QJ6418000
HS Code 32041200

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 Synonyms

Disodium 4,5-dihydroxy-3-(phenyldiazenyl)-2,7-naphthalenedisulfonate
CHROMOTROPE 2R
2-(Phenylazo)chromotropic acid disodium salt
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2)
4,5-Dihydroxy-3-phenylazo-2,7-naphthalenedisulfonic Acid Disodium Salt
MFCD00003955
2-(Phenylazo)chromotropic acid disodium salt Acid Red 29
Acid Red 29
Disodium 4,5-dihydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonate
EINECS 224-085-0
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