Vat Brown 5
- CAS NO.：3989-75-1
- Empirical Formula: C24H12O2S2
- Molecular Weight: 396.48
- MDL number: MFCD00800447
- EINECS: 223-633-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is Vat Brown 5?
Preparation
Naphtho[2,1-b]thiophen-1(2H)-one oxidation, this intermediates in Chlorobenzene using Phosphorus trichloride or 2-(Naphthalen-2-ylthio)acetic acid closed loop and have to (BIOS986, 260; FIAT 764).
Properties and Applications
brown to red light brown. Red brown powder. Insoluble in water and Etanol, slightly soluble in Xylene for bordeaux red solution. In concentrated sulfuric acid to dark brown, and then into blue, after dilution for blue; In the basic insurance powder also concentrate for the red light yellow, In the acidic insurance powder also concentrate for light brown. For light brittle dye. Suitable for direct printing, resist printing and aniline black color printing. Suitable for knitting &cotton fabric dyeing, more suitable for silk printing, and can also be used to viscose and wool dyeing. Can be processed into organic pigment.
| Standard | Ironing Fastness | Chlorine bleach | Light Fastness | Mercerized | Oxygen bleach | Soaping | |
| Fading | Stain | ||||||
| ISO | 3 | 4 | 6-7 | 4 | 4-5 | 4-5 | 5 |
| AATCC | 4 | 4-5 | 5-6 | 5 | 4-5 | ||
Properties of Vat Brown 5
| Boiling point: | 575.7±50.0 °C(Predicted) |
| Density | 1.523±0.06 g/cm3(Predicted) |
| EPA Substance Registry System | Naphtho[2,1-b]thiophen-1(2H)-one, 2-(1-oxonaphtho[2,1-b]thien-2(1H)-ylidene)- (3989-75-1) |
Safety information for Vat Brown 5
Computed Descriptors for Vat Brown 5
Vat Brown 5 manufacturer
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