Vinyl pink staining

Trichloromethyl thio Phthalimide. This (Fig. 5.4—III) is harmless to humans and is useful at 0.25 to 0.50 percent to control actinomycetes, which cause pink staining of plasticized vinyls. 

Af-(Trichloromethylthio) Phthalimide n A bacteriostatic agent used in vinyl fabrics for hospitals and households. It stops the growth of bacteria such as staphylococcus aureus that cause pink staining in white and pastel-colored PVCs. 

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