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CAS 2610-11-9 | Direct Red 81

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Common NameDirect Red 81
CAS Number2610-11-9Molecular Weight675.59900
Density/Boiling Point/
Molecular FormulaC29H19N5Na2O8S2Melting Point240ºC
MSDSChineseUSAFlash Point/

Names

Namechlorantine fast red 5b
SynonymMore Synonyms

Direct Red 81 BiologicalActivity

DescriptionDirect Red 81 is a diazo dye with a very high water solubility. The dye adsorption efficiency of Direct Red 81 is increased by increasing the adsorbent dose and adsorption time[1].
Related CatalogSignaling Pathways >>Others >>Others
References

[1]. Dehghani M, et al. Direct red 81 adsorption on iron filings from aqueous solutions; kinetic and isotherm studies. Environ Technol. 2019 May;40(13):1705-1713.

Chemical & Physical Properties

Melting Point240ºC
Molecular FormulaC29H19N5Na2O8S2
Molecular Weight675.59900
Exact Mass675.04700
PSA229.93000
LogP8.67130
InChIKeyUFUQRRYHIHJMPB-UHFFFAOYSA-L
SMILESO=C(Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(S(=O)(=O)[O-])cc4)cc3)c(S(=O)(=O)[O-])cc2c1)c1ccccc1.[Na+].[Na+]

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
QK1370000
CHEMICAL NAME :
2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo) phenyl)azo)-,disodium salt
CAS REGISTRY NUMBER :
2610-11-9
LAST UPDATED :
199710
DATA ITEMS CITED :
7
MOLECULAR FORMULA :
C29-H19-N5-O8-S2.2Na
MOLECULAR WEIGHT :
675.63

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1048 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TEST SYSTEM :
Rodent - mouse
DOSE/DURATION :
91250 ug/kg/24H (Intermittent)
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 40,183,1988 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M2171 No. of Facilities: 99 (estimated) No. of Industries: 5 No. of Occupations: 12 No. of Employees: 1931 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M2171 No. of Facilities: 369 (estimated) No. of Industries: 9 No. of Occupations: 6 No. of Employees: 5247 (estimated) No. of Female Employees: 544 (estimated)

Safety Information

Personal Protective EquipmentEyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Safety PhrasesS22;S24/25
RIDADRNONH for all modes of transport
RTECSQK1370000

Articles22

More Articles
Direct red 81 and amido black stain proteins in polyacrylamide electrophoresis gels within 10 min.

Anal. Biochem. 400(1) , 139-41, (2010)

Proteins separated by SDS-polyacrylamide gel electrophoresis can be stained with organic dyes, the most popular being Coomassie brilliant blue R-250. Coomassie R-250 staining of ovalbumin in an SDS-PA...

Rapid detection of proteins in polyacrylamide electrophoresis gels with Direct Red 81 and Amido Black.

Methods Mol. Biol. 869 , 585-9, (2012)

Proteins separated by SDS-polyacrylamide gel electrophoresis need to be stained with organic dyes to be visualized and to enable comparisons to be made between the intensity of protein bands to observ...

The structure of the bilaminar zone in the human temporomandibular joint: a light and scanning electron microscopy study in young and elderly subjects.

J. Oral Rehabil. 28(2) , 113-9, (2001)

The bilaminar zone (BZ) in the human temporomandibular joint (TMJ) of toothed adults (GI) and toothless, elderly humans (GII) were analysed using light and scanning electron microscopy (SEM). In both ...

Synonyms

disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulfonate
SOLARREDBA
MFCD00003949
7-Benzoylamino-4-hydroxy-3-[4-(4-sulfo-phenylazo)-phenylazo]-naphthalin-2-sulfonsaeure,Dinatrium-Salz
saturnredb
Chlorantinlichtrot-5BL
Chlorantine Fast Red 5B
Red 4BL
siriusred4b
7-benzoylamino-4-hydroxy-3-[4-(4-sulfo-phenylazo)-phenylazo]-naphthalene-2-sulfonic acid,disodium-salt
C. I. Direct Red 81
DURAZOL RED
solarredb
Direct Red 81
EINECS 220-028-9
helionred8b
SiruisRed4B

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