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Light Yellow Powder Optical Brightener VBL 85 CAS No 12224-06-5
Product Details
Mat no.10010025 Fluorescent Brightener 85 Light Yellow Powder Optical BrightenerVBL(OBA85) Purity≥98%
| English synonyms | fluorescent brightener 85 ; Disodium 4,4'-bis[(4-anilino-6-hydroxyethylamino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulphonate ; Brightener VBL ; Optical Brightening Agent Vbl ; Fluorescent brightening agent 85 ; Fluorescent brightener VBL (CI85) ; optical brightenerVBL(OBA85) |
| CAS No. | 12224-06-5 |
| Molecular formula | C36H34N12Na2O8S2 |
| Molecular weight | 872.8403 |
| EINECS number | 602-364-1 |
| Color | Light Yellow |
| Form | Powder |
| Solubility | soluble in soft water |
| Chemical nature | This product is light yellow powder and belongs to anionic compound, It can be dissolved in soft water (the amount of water can reach more than 80 times). There is condensation when it begins to dissolve. Dilute it with water and stir it fully to obtain a transparent liquid. Its bath dyeing needs to be neutral or slightly alkaline. It can be mixed with anionic, non-ionic active agents and anionic dyes. It is not suitable to be used in the same bath with cationic dyes and cationic surfactant synthetic resin shrinkage. |
| Use |
It is mainly used for whitening of cellulose fiber fabrics and paper, brightening of light colored fabrics and whitening of pad printing. The dye uptake of this product is similar to that of dyes. It can be promoted by salt, sodium sulfate, chemical book, etc. and delayed by leveling agent. The temperature is closely related to the time and dye uptake. This product has the advantages of low price, good affinity and high fluorescence intensity. It is widely used in industry. |
| production method | Put 30kg DSD acid into 40kg water, heat it to 90 ℃, neutralize it with 10% soda solution to pH = 7 ~ 8. Add 1.3 parts of activated carbon, stir and decolorize, and remove carbon residue by suction filtration, The filtrate is to be used (the filtrate is sodium DSD acid). Put 30 parts of cyanuric chloride into the reactor, add 150 parts of crushed ice, strongly stir and cool to - 2 ℃, and add leveling agent o (10% aqueous solution) 0.2 parts, 0.2 hydrochloric acid, and even. Stir slowly and pour into the DSD acid sodium salt solution Chemicalbook above. The temperature is 0~5 degrees centigrade, the foam is found, and the secondary soda solution is used to defoaming, and the pH value is kept between 4 and 4.5 gradually. When the pH value does not drop, 14.8 drops of aniline are added, and the pH value is controlled at 4 when the aniline is added to aniline. ~ 4.5, after dropping, react for about 1H. Cool down and filter by standing, adjust the pH value of the filtrate with hydrochloric acid = 1 ~ 1.5, and the precipitate is VBL brightener. The filter cake is kneaded and dried with an appropriate amount of soda powder, and 20 parts of sodium sulphate are added to obtain the finished product. |
| Hazard category | 8 |
| WGK Germany | 3 |
| Dangerous goods sign | C |
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