Moderate Cosmetic Ingredient NOAEL Data

Silver Hydroxide

INCI: SILVER HYDROXIDE

CAS Number
20667-12-3
Function
Antimicrobial
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically restricted; general cosmetic use

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

4 study endpoints found for Silver Hydroxide. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 30 mg/kg bw/day oral rat oral REACH
NOAEL 1.5 mg/kg bw/day other rat oral REACH
NOAEL 30 mg/kg bw/day oral rat oral REACH
NOAEL 1.5 mg/kg bw/day other rat oral REACH

Expert Verdict

Silver CMR Cat. 2; highly reactive/unstable compound (decomposes to silver oxide); free silver ion release concern; argyria risk with overexposure; no formal cosmetic safety dossier

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Concern Level: High

Frequently Asked Questions

Is Silver Hydroxide safe in cosmetics?

Silver CMR Cat. 2; highly reactive/unstable compound (decomposes to silver oxide); free silver ion release concern; argyria risk with overexposure; no formal cosmetic safety dossier The EU classifies Silver Hydroxide as "restricted". Safety rating: MODERATE. 4 toxicological study endpoint(s) are available in our database.

Is Silver Hydroxide allowed in the EU?

Silver Hydroxide EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Silver Hydroxide do in cosmetics?

Silver Hydroxide functions as: Antimicrobial. It is classified as a cosmetic ingredient in our database. CAS number: 20667-12-3.

What is the Margin of Safety for Silver Hydroxide?

not established 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.

What is the NOAEL for Silver Hydroxide?

The NOAEL (No Observed Adverse Effect Level) for Silver Hydroxide is 30 mg/kg bw/day based on a oral study via oral route in rat. A total of 4 study endpoints are available. Source: REACH.

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