How did Charles Tennant’s bleaching powder help the cotton-textile industry?

Charles Tennant’s bleaching powder, introduced in 1799, was a transformative innovation for the cotton-textile industry because it solved a major production bottleneck.12

Before this invention, textile manufacturers relied on slow, natural bleaching methods—such as exposure to sunlight, rain, sour milk, and urine—which were time-consuming and inefficient. By creating a solid, stable combination of chlorine and slaked lime, Tennant provided a product that had the same effective bleaching properties as chlorine gas but was significantly easier to handle, store, and ship.21

This development allowed for much more rapid bleaching processes, effectively meeting the high demands of the British cotton-textile industry during the Industrial Revolution. Because it could be produced in large quantities, bleaching powder became the standard industrial bleaching agent for over a century, helping to modernize textile manufacturing.21