Optical Brightening Agents (OBA) | Types & Uses of OBA



What are Optical Brightening ?

Optical brightening agents (OBAs), also known as fluorescent brightening agents (FBAs), are chemical compounds that give whitening effect to fabric. They do this by absorbing light in the ultraviolet and violet regionand re-emit the light in the blue region. This blue light reduces the yellow colour of the substrate and give a brightened look. Unlike bleaching, it doesn’t leave ayellowish tinge and gives a much pleasing whiter-than-white appearance. Such a property sets optical brightening agents apart and makes it a much coveted thing in industries such as Textiles, Plastics, Paper, and Cosmetics.

Types of Optical Brightening Agents

Based on the number of sulphonic groups, brightening agents can be categorised into three main types. 

1) Disulfonated Optical Brightening Agents

2) Tetrasulfonated types

3) Hexasulfonated OBAs

For Detail information on each types visit our recently published blog 

This blog is originally published on meghmani website.






Location: Ahmedabad, Gujarat, India

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