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Pigment Red 32

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Pigment Red 32

EINECS 229-099-0
CAS No. 6410-29-3 Density 1.277 g/cm3
PSA 112.38000 LogP 7.62000
Solubility N/A Melting Point N/A
Formula C31H24N4O4 Boiling Point N/A
Molecular Weight 516.55 Flash Point N/A
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 6410-29-3 (Pigment Red 32) Hazard Symbols N/A

2-Naphthalenecarboxamide,3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-N-phenyl- (9CI);C.I. Pigment Red 32 (8CI);C.I. 12320;Naftol Red Dark;Pigment Red 32;PolymoRed FR;Vulcan Fast Rubine B;2-Naphthalenecarboxamide, 3-hydroxy-4-((2-methoxy-5-((phenylamino)carbonyl)phenyl)azo)-N-phenyl-;4-((5-(Anilino)carbonyl-2-methoxyphenyl)azo)-3-hydroxy-N-phenylnaphthalene-2-carboxamide;


Pigment Red 32 Specification

The CAS registry number of Pigment Red 32 is 6410-29-3. The IUPAC name is (4Z)-4-{2-[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene}-3-oxo-N-phenyl-3,4-dihydronaphthalene-2-carboxamide. Its EINECS registry number is 229-099-0. In addition, the molecular formula is C31H24N4O4 and the molecular weight is 516.55. It is a red powder with blue light. What's more, it can be used in dyeing rubber and plastic.

Physical properties about this chemical are: (1)ACD/LogP: 4.51; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 6; (4)ACD/LogD (pH 7.4): 6; (5)ACD/BCF (pH 5.5): 10458; (6)ACD/BCF (pH 7.4): 10258; (7)ACD/KOC (pH 5.5): 26222; (8)ACD/KOC (pH 7.4): 25721; (9)#H bond acceptors: 8; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 7; (12)Polar Surface Area: 108.89 Å2; (13)Index of Refraction: 1.656; (14)Molar Refractivity: 148.651 cm3; (15)Molar Volume: 404.593 cm3; (16)Polarizability: 58.93 ×10-24cm3; (17)Surface Tension: 51.717 dyne/cm; (18)Density: 1.277 g/cm3.

Preparation of Pigment Red 32: it can be prepared by 2-methoxy-5-benzoylaniline. The 2-methoxy-5-benzoylaniline can be prepared by 2-methoxy-5-methanoic acidnitrobenzene and aniline. This reaction will need reagent chlorinated alkali. The reaction time is 8 hours at reaction temperature of 107~110 °C. The yield is about 93%.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(Nc1ccccc1)c2cc(c(OC)cc2)N/N=C4/c5ccccc5/C=C(/C(=O)Nc3ccccc3)C4=O
(2)InChI: InChI=1/C31H24N4O4/c1-39-27-17-16-21(30(37)32-22-11-4-2-5-12-22)19-26(27)34-35-28-24-15-9-8-10-20(24)18-25(29(28)36)31(38)33-23-13-6-3-7-14-23/h2-19,34H,1H3,(H,32,37)(H,33,38)/b35-28-

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