ChemicalBook CAS DataBase List 51920-12-8

51920-12-8

Name	Pigment Red HF4C
CAS	51920-12-8
EINECS(EC#)	257-515-0
Molecular Formula	C27H24N6O6S
Molecular Weight	560.58
MOL File	51920-12-8.mol

Chemical Properties

Melting point	335-345 ºC
density	1.3-1.4
pka	10.63±0.50(Predicted)
Water Solubility	3.4μg/L at 26℃
LogP	0.8 at 25℃
EPA Substance Registry System	2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[[2-methoxy-5-methyl-4-[(methylamino)sulfonyl]phenyl]azo]- (51920-12-8)

Safety Data

TSCA	TSCA listed

Hazard Information

Uses

Pigment Red 185 is an organic pigment used in artist’s paints throughout the 20th and 21st centuries.

Flammability and Explosibility

Notclassified

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	RED POWDER
HEAT RESISTANCE	300 °C min
LIGHT FASTNESS	7-8
ACID RESISTANCE	5
ALKALI RESISTANCE	5
FASTNESS TO BLEEDING	5
OIL ABSORPTION	40-50%
SPECIFIC SURFACE	26m ² /g
DENSITY	1.40 g/cm ³
RESIDUE ON 80 MESH	5.0% max
WATER SOLUBLE	1.0% max
VOLATITE 105 °C	1.0% max
TINTING STRENGTH	100-105 %

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