Sodium Benzoate, a New Alternative for Preservation in Home Care

A. W. Yarnell, S. F. Forster, J. Blankenship, P. Wanrooij, K. J. Posselt

Consumer scrutiny and regulations have restricted the preservative palette available to home care formulators. Preservatives forConsumer scrutiny and regulations have restricted the preservative palette available to home care formulators. Preservatives forhome care must be BPR registered under product type 6 (Preservatives for products during storage). The current options presenta growing number of challenges to consumer goods companies and formulators, including negative labeling requirementsfor corrosiveness or skin sensitization and compatibility with other ingredients. Sodium benzoate is now available for householdand laundry care applications (under trade name Kalaguard* SB) and fills the market need for a widely effective, economical,green-label preservative. The efficacy of sodium benzoate was investigated in home care applications at pH 5.0 to 7.0, aloneand in combination with low levels of MIT/MCIT and EDTA. Sodium benzoate effectively preserved the example home care formulationsusing concentrations ranging from 0.35 to 1.5%, depending on the formulation and pH.

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