Simplified evaluation aided by mathematical calculation for characterization of polyols by hydroxyl value determination

Hydroxyl value is a fundamental characterization number that extensively applicable in polymer science. The American Society for Testing and Materials (ASTM) has described several methods to determine the hydroxyl value. However, routinely practiced ASTM method requires noxious chemicals involves laborious procedure this study based on reaction of p‐toluenesulfonyl isocyanate polyol, followed by neutralization titration calculate number. Mathematical calculation been employed derive an equation determining value, which provides user-friendly approach. validated comparing determined using standards. proposed proved be accurate, reproducible. Also, it rapid, simple, easily accessible, low-cost groups.