Wetting agent

this is very important in the wet processing sector.

1. DIFFERENT KINDS OF AGENT SUBMITTED BY Nazmul Hasan 173003011 [email protected] 1

2. OUTLINE 2 History Function Chemical structure Working principle Toxicity level Conclusion

3. HISTORY 3 Soap Surface tension Liquid molecule

4. FUNCTION 4 Levelling agent Desizing agent Mercerizing agent Dye fixing agent Soap agent

5. CHEMICAL STRUCTURE 5 Levelling agent:

6. Desizing agent: 6

7. Mercerizing agent 7

8. Dye fixing agent 8

9. WORKING PRINCIPLE 9 Reduce surface tension Increase speared abilities

10. TOXICITY LEVEL 10 The toxicity of a compound may be modified by differences in formulation. Solvents are especially important in this connection, but wetting agents and other ancillary compounds may be involved. When these chemicals promote or retard the toxicity of a pesticide, it is usually through promotion or retardation of absorption. The facilitating action may involve injury to a barrier, especially in the skin. Increase in absorption may also involve a solvent that, by its own ready absorption, enhances absorption of the toxicant.

11. CONCLUSION 11 Wetting agents increase the spreading and penetrating properties of a liquid by lowering its surface tension. The surface tension of a liquid is the tendency of the molecules to adhere to each other at the surface, and is determined by the strength of the bonds or attraction between the liquid molecules. A wetting agent stretches these bonds and decreases the tendency of molecules to bond together, which allows the liquid to spread more easily across any solid surface