CAS No 27344-41-8 (31#) Optical Brightener
Product Description
Appearance:
light yellow to yellow uniform powder
Characteristic:
1. Green tone
2. Acid and alkali resistant range pH 7-12
3. Good sunlight resistance and aging resistance.
| Index | Standard |
| UV absorption | 360~380 |
| Max UV absorption by nm | 348 |
Mainly applied in washing powder, soap, cotton, viscose; Also used in brightening of light tone or printed fabrics, and whitening of vinylon and chinion product
Recommended dosage:| Products | Dosage |
| Common washing powder | 0.08~0.15 % |
| Soap | 0.1~0.2 % |
| Concentrated detergent powder | 0.1~0.2 % |
| Fabric softening agent | 0.1~0.2 % |
| Liquid detergent | 0.1~0.2 % |
| Textile | 0.08-0.3%, bath ratio: 1:40; optimum temperature: 60ºC |
1. There are more than 5000 brighteners on the world market, they are actually different brand names and numbers from different producers/ distributors for less than 400 chemical compounds. On China's market, the main names/ types are: BBU, CXT, BA-L, BA, APC, DMS(AMS), MST, 210, VBL, BBU, DT, VBU, BA, BC, DMS, FB-351, CBS-L, BA-L, 31#, CBW, 5BM, OB-1, APC, VBL, CXT, BBC, BST, BC-100, ER, ERI, BBU, CBS-L, PS(PF), OB, KB, OB-1, KCB, KSN, DBH-1, APH, APB-L, ER, KCB, KSN, PF, NFW, HPE and etc.
2. We normally list 24 months as the shelf life in our COA, the real shelf life can be slightly longer than 24 months if it's stocked in good condition (bags are sealed enough, away from direct sun-light, moisture and other incompatible chemical materials), but it's still suggested to avoid long time storage
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