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128-66-5

128-66-5 Structure

128-66-5 Structure
IdentificationBack Directory
[Name]

Vat Yellow 4
[CAS]

128-66-5
[Synonyms]

C.I.59100
C.I.VATYELLOW4
Tinon Golden Yellow GK
Anthravat golden yellow
Amanthrene golden yellow
Vat yellow 4 (C.I. 59100)
Arlanthrene golden yellow
Anthravat golden yellow gk
Amanthrene golden yellow gk
Nihonthrene Golden Yellow GK
DIBENZO(B)CHRYSENE-7,14-DIONE
Indanthren Printing Yellow GOK
Ahcovat printing golden yellow
Ahcovat printing golden yellow gk
2,3,7,8-Dibenzopyrene-1,6-quinone
dibenzo[b,def]chrysene-7,14-dione
1',2',6',7'-Dibenzpyrene-7,14-quinone
[EINECS(EC#)]

204-903-2
[Molecular Formula]

C24H12O2
[MDL Number]

MFCD00046211
[MOL File]

128-66-5.mol
[Molecular Weight]

332.351
Chemical PropertiesBack Directory
[Appearance]

viscous orange liquid
[Melting point ]

385 °C
[Boiling point ]

429.48°C (rough estimate)
[density ]

1.1459 (rough estimate)
[refractive index ]

1.4891 (estimate)
[Stability:]

Stable. Combustible. Incompatible with strong oxidizing agents.
[CAS DataBase Reference]

128-66-5
[IARC]

3 (Vol. 48) 1990
[EPA Substance Registry System]

C.I. Vat Yellow 4 (128-66-5)
Hazard InformationBack Directory
[Chemical Properties]

viscous orange liquid
[General Description]

Viscous orange liquid. Used for coloring of cotton, wool and cellulose acetate.
[Air & Water Reactions]

Water soluble.
[Reactivity Profile]

Vat Yellow 4 reacts very readily with reducing agents to give a colorless or nearly colorless product. Subsequent oxidation then restores the color.
[Health Hazard]

ACUTE/CHRONIC HAZARDS: When heated to decomposition Vat Yellow 4 emits acrid smoke and irritating fumes.
[Fire Hazard]

Vat Yellow 4 is probably combustible.
[Uses]

Vat Yellow 4 is a commercial dye used in textiles. Polyaromatic hydrocarbon with potential carcinogenic activity.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.
[Definition]

ChEBI: Vat Yellow 4 is an ortho- and peri-fused polycyclic arene.
[Preparation]

(a) 3-Benzoylbenzanthrone?and Aluminium chloride and antioxidant for the closed-loop response; (b) 1,5-Dibenzoyl-2-naphthaene?in Aluminium chloride and sodium chloride were under existing closed-loop response.
[Synthesis]

7,14-Dibenzpyrenequinone, Indanthren Golden Yellow GK, is prepared from 1,5-dibenzoylnaphthalene (itself prepared from naphthalene with benzoyl chloride – AlCl3) by fusion with AlCl3-NaCl at 160 ?C and aeration with oxygen , , .
[Properties and Applications]

red light yellow. Yellow brown powder. Soluble in nitrobenzene, four hydrogenated naphthalene and dimethyl benzene, slightly soluble in acetone, ethanol, benzene, chloroform, o-chlorophenol, Pyridine and toluene. The strong sulfuric acid to red light purple, orange after diluted precipitation, in alkaline insurance powder is in stock for purplish red color; In the acidic insurance powder also in stock for golden brown. Can be used for the discharge printing of cotton, mainly used in the winter sun often dark cotton print, also suitable for silk and polyamide fiber dyeing.
Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4-5 4-5 5-6 5 4-5 3-4 4
AATCC 5 5 4-5 5 4
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Aluminium chloride hexahydrate-->Sodium chlorate-->Naphthalene-->2,4-Dinitrochlorobenzene-->hypochlorous acid-->INDUSTRIAL SALT
[Preparation Products]

Vat brown 39 (C.I. 59270)-->disodium dibenzo[b,def]chrysene-7,14-diyl bis(sulphate)-->Vat Orange 1-->C.I. Vat Yellow 44
Safety DataBack Directory
[Hazardous Substances Data]

128-66-5(Hazardous Substances Data)
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