Vasna Road, Vadodara, Gujarat
- GST NO. : 24ACAFS2268J1Z3
Optical Brighteners
Optical Brighteners are added to many materials to reduce yellowing, improve whiteness and to enhance the brightness of a product.
We introduce the following Optical Brighteners
- Optical Brightener OB
- Optical Brightener OB-1
Above Brighteners give very brilliant whitening shades in following applications :
- Fiber like polyester, Polyamide & PP.
- Plastics like PS, HIPS, ABS, PC, Polyolefin’s, Rigid PVC etc.
- Detergents, Soaps, Papers etc.
- Inks, Paints, Films etc.
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| Business Type | Exporter, Supplier, Importer |
| CI No. | 184 |
| CAS No. | 7128-64-5 |
| Chemical Name | 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole) |
Preferred Buyer From
| Location | Anywhere in India |
Optical Brightener OB is a high molecular weight fluorescent whitening agent which significantly improves the whiteness in thermoplastics, printing inks, Lacquers, Manmade fiber etc.
Optical Brightener OB Produces very brilliant white with light reddish Blue effect to, which compensates for yellowing to. It has good light fastness in substrates, excellent resistance to heat, high chemical stability, Soluble in a wide range of organic solvents. It gives Brilliant, Bluish white effect.
Specification
| APPEARANCE | Pale Yellow Crystalline Powder |
| MOLECULAR FORMULA | C26 H26 N2 O2S |
| MOLECULAR WEIGHT | 443 |
| MELTING POINT | 198 ± 30C |
| SPECIFIC GRAVITY | 1.26 |
| λMAX (CHCI3) | 375 nm |
| ASSAY: | 99% (Min) |
| ASH | 0.5% (Max) |
| VOLATILE MATTER | 0.5% (Max) |
VOLATILITY
| TGA heating rate 20OC/min in air Temperature (oC) |
Volatility Weight loss (%) |
| 280 | 1 |
| 310 | 2 |
| 325 | 5 |
LIGHT FASTNESS IN VARIOUS SUBSTRATES:
| SUBSTRATES | Light Fastness (on Blue scale) |
| PVC | 4-7 |
| PE | 2-4 |
| PP | 1.-4 |
| Cellulose Acetate | 5-7 |
| PS | 2-5 |
| Acrylic Resin Lacquers-- | 4-5 |
| Polyamide | 3-5 |
| Liner Polyester | 7 |
SOLUBILITY
| SOLVENT | % SOLUBILITY |
| ETHANOL | 0.1 |
| ACETONE | 0.5 |
| MEK | 1.3 |
| TOLUENE | 5.3 |
| CTC | 5.9 |
| DMF | 0.8 |
| CHLOROBENZENE | 10.2 |
| DOP | 0.7 |
| ETHYL ACETATE | 1.1 |
| MEG | 0.2 |
| CYCLOHEXANONE | 3.3 |
| XYLENE | 5 |
Structure
| Business Type | Exporter, Supplier, Importer |
| CI No. | 393 |
| CAS No. | 1533-45-5 |
| Chemical Name | 4,4’ – bis (benzoxazol – 2 – yl) stibene |
Preferred Buyer From
| Location | Anywhere in India |
Optical Brightener OB-1 is a high molecular weight fluorescent whitening agent which significantly improves the whiteness in both textile fibers and plastics.
Optical Brightener OB – 1 produces very brilliant white with light reddish Blue effect which compensate for yellowing. It has good light fastness. Because of it’s exceptional whitening properties, excellent resistance to heat, low volatility and easy dispersibility it is now widely used in plastic market. It has good compatibility in various substrates, in combination with dyes it produces bright shades.
Brightener OB – 1 is used in polymer fibers especially polyester and polyamide fibers. It is also widely used in PP, ABS, PS, HIPS, PA, PC, EVA, Rigid PVC etc.
VOLATILITY
| TGA heating rate 20OC/min in air Temperature (oC) |
Volatility Weight loss (%) |
| 380 | 0.2 |
| 350 | 2.2 |
| 400 | 19.4 |
Specification
| APPEARANCE | Pale Yellow Crystalline Powder |
| MOLECULAR FORMULA | C28 H18 N2 O2 |
| MOLECULAR WEIGHT | 414.4 |
| ODOUR | ODOURLESS |
| MELTING POINT | 357 ± 50C |
| SPECIFIC GRAVITY | 1.35 |
| ASSAY: | 0.99 |
| ASH | 0.5% (Max) |
| VOLATILE MATTER | 0.5% (Max) |
| λMAX (Ethanol) | 374 nm (Absorption) |
| SOLUBILITY | Insoluble in water, Methanol, Acetone, Chloroform, at 25oC |
Structure
