ChemicalBook CAS DataBase List 71832-85-4

71832-85-4

Name	Pigment Yellow 168
CAS	71832-85-4
EINECS(EC#)	276-057-2
Molecular Formula	C32H24CaCl2N8O14S2
MDL Number	MFCD23160569
Molecular Weight	919.692
MOL File	71832-85-4.mol

Chemical Properties

density	1.6[at 20℃]
Water Solubility	1.697-1.7mg/L at 23℃
LogP	-0.59 at 23℃
EPA Substance Registry System	Benzenesulfonic acid, 4-[[1-[[(2-chlorophenyl)amino] carbonyl]-2-oxopropyl]azo]- 3-nitro-, calcium salt (2:1)(71832-85-4)

Safety Data

Hazard statements	H413
TSCA	TSCA listed

Hazard Information

Uses

Pigment yellow 168 is a disazomethine dye with solid-state fluorescence.a biologically active chemical.

Synthesis

Method of preparing pigment yellow 168, comprising the steps of:

(1) dissolving 2-nitro-4-sulfoaniline, in hydrochloric acid;

(2) the solution is cooled down to less than 5 degrees Celsius in an ice bath;

(3) sodium nitrite is

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	YELLOW POWDER
SHADE	GREENISH
HEAT RESISTANCE	280 °C min
LIGHT FASTNESS	7
ACID RESISTANCE	5
ALKALI RESISTANCE	5
FASTNESS TO BLEEDING	5
OIL ABSORPTION	40-45%
SPECIFIC SURFACE	27 m ² /g
DENSITY	1.60 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 %

References

[1] Pl?tner J, Dreuw A. Solid state fluorescence of Pigment Yellow 101 and derivatives: a conserved property of the individual molecules[J]. Physical Chemistry Chemical Physics, 2006, 8(10): 1197-1204.

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