Excellent Cosmetic Ingredient NOAEL Data GHS Classified

Disodium Phosphate

INCI: DISODIUM PHOSPHATE

CAS Number
7558-79-4
Function
Buffering agent, pH adjuster, corrosion inhibitor
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes FDA classifies sodium phosphate salts as GRAS with no evidence of hazard at current or foreseeable use levels. Also approved as an ingredient in OTC laxative drug products.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

6 study endpoints found for Disodium Phosphate. 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 4590 mg/kg bw/day oral rat Chronic COSMOS_DB
NOAEL 5000 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 10000 mg/kg bw/day oral rat Short Term Toxicity COSMOS_DB
NOAEL 1500 mg/kg bw/day oral rat Chronic COSMOS_DB
NOAEL 4345 mg/kg bw/day oral rat Short Term Toxicity COSMOS_DB
dose_tested 4590 mg/kg bw/day oral rat Chronic COSMOS_DB

GHS Hazard Classification

Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.

Signal Word
WARNING
Hazard Statements
Causes mild skin irritation Causes eye irritation
Short-term Exposure Effects
The substance is mildly irritating to the eyes, skin and respiratory tract.

Expert Verdict

Safe as used in cosmetics when formulated to be nonirritating. CIR Expert Panel (2021) concluded safe at concentrations up to 2.9%. FDA GRAS for food; no prohibited or restricted status under EU Cosmetics Regulation 1223/2009.

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Concern Level: None

Regulatory Flags

buffering-agent ph-adjuster fda-gras cir-safe-2021 inorganic-salt no-mos-required eu_children_restricted fda_food_additive

Frequently Asked Questions

Is Disodium Phosphate safe in cosmetics?

Safe as used in cosmetics when formulated to be nonirritating. CIR Expert Panel (2021) concluded safe at concentrations up to 2.9%. FDA GRAS for food; no prohibited or restricted status under EU Cosmetics Regulation 1223/2009. The EU classifies Disodium Phosphate as "permitted". Safety rating: EXCELLENT. 6 toxicological study endpoint(s) are available in our database.

Is Disodium Phosphate allowed in the EU?

Disodium Phosphate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Disodium Phosphate do in cosmetics?

Disodium Phosphate functions as: Buffering agent, pH adjuster, corrosion inhibitor. It is classified as a cosmetic ingredient in our database. CAS number: 7558-79-4.

What is the Margin of Safety for Disodium Phosphate?

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 Disodium Phosphate?

The NOAEL (No Observed Adverse Effect Level) for Disodium Phosphate is 4590 mg/kg bw/day based on a Chronic study via oral route in rat. A total of 6 study endpoints are available. Source: COSMOS_DB.

Is Disodium Phosphate classified as hazardous under GHS?

Disodium Phosphate carries a GHS signal word of "WARNING". Hazard statements: Causes mild skin irritation Causes eye irritation. This classification is based on the ILO/WHO International Chemical Safety Card and ECHA C&L inventory data. Note: GHS classification applies to the pure substance โ€” at cosmetic use concentrations, hazard thresholds may not be met.

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