Potassium Borate

INCI: POTASSIUM BORATE

CAS Number
1332-77-0 (tetraborate form)
Function
Emulsifier, buffering, cross-linking agent
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically banned but CIR/SCCS raised significant safety concerns; under regulatory scrutiny

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Reproductive toxicant (Repr. 1B); systemic boron toxicity; banned in EU cosmetics; do not formulate for EU or markets applying EU standards

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Concern Level: High

Frequently Asked Questions

Is Potassium Borate safe in cosmetics?

Reproductive toxicant (Repr. 1B); systemic boron toxicity; banned in EU cosmetics; do not formulate for EU or markets applying EU standards The EU classifies Potassium Borate as "prohibited". Safety rating: POOR.

Is Potassium Borate allowed in the EU?

Potassium Borate EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Potassium Borate do in cosmetics?

Potassium Borate functions as: Emulsifier, buffering, cross-linking agent. It is classified as a cosmetic ingredient in our database. CAS number: 1332-77-0 (tetraborate form).

What is the Margin of Safety for Potassium Borate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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