Is Phosphorus Pentoxide safe in cosmetics?
Phosphorus Pentoxide has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
Phosphorus Pentoxide
Also known as: Diphosphorus pentaoxide, Diphosphorus pentoxide, Phosphoric acid anhydride, PHOSPHORIC ANHYDRIDE, Phosphoric oxide (+11 more)
Phosphorus Pentoxide (CAS 1314-56-3) is a cosmetic cosmetic ingredient functioning as Catalyst; Chelating agent; Flame retardant; pH regulating agent. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 1314-56-3 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
Phosphorus Pentoxide is classified GHS Danger (H314, H318, H330) in the chemicals database but is allowed in EU cosmetics.
Source: Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
Function
Catalyst; Chelating agent; Flame retardant; pH regulating agent
Safety Rating
MODERATE
Chemistry & Identifiers
InChIKey
YWEUIGNSBFLMFL-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Phosphorus Pentoxide.
Calculate MoS for your specific formulation with the MoS Calculator.
GHS Hazard Classification
Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.
Short-term Exposure Effects
The substance is very corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of dust may cause lung oedema. See Notes. The effects may be delayed. Medical observation is indicated.
Routes of Exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
EU CLP Annex VI Harmonized Classification
Legally binding harmonized classification per Regulation (EC) No 1272/2008 (CLP) Annex VI.
Signal Word
Danger
Pictograms
Corrosive
Hazard Class and Category
Skin Corr. 1A
Hazard Statements
- H314 Causes severe skin burns and eye damage
Inserted via ATP: CLP00
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
10,000 - 100,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Hazard classification: Restricted (Annex XVII)
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Catalyst
Chelating agent
Flame retardant
pH regulating agent
Regulatory List Membership (1)
FDA Indirect Food Contact Additives
Expert Verdict
Expert safety assessment and concern-level summary for Phosphorus Pentoxide.
Known Synonyms
Diphosphorus pentaoxide
Diphosphorus pentoxide
Phosphoric acid anhydride
PHOSPHORIC ANHYDRIDE
Phosphoric oxide
Phosphoric pentoxide
Phosphorus pentaoxide
Diphosphorus pentaoxide (P2O5)
Diphosphorpentaoxid
PHOSPHORUS OXIDE
EINECS 215-236-1
Phosphoric acid, anhydrous
Phosphorus, oxide, pent-
UNII-51SWB7223J
EC No.: 215-236-1
215-236-1
Chemical Function
Chelating agent
pH regulating agent
Flame retardant
Catalyst
Regulatory Lists
Indirect additives food contact (10/2018)
Indirect additives food contact (10/2018)
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Phosphorus Pentoxide allowed in the EU?
Phosphorus Pentoxide EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Phosphorus Pentoxide do in cosmetics?
Phosphorus Pentoxide functions as: Catalyst; Chelating agent; Flame retardant; pH regulating agent. It is classified as a cosmetic ingredient in our database. CAS number: 1314-56-3.
Is Phosphorus Pentoxide used outside cosmetics?
Phosphorus Pentoxide also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Phosphorus Pentoxide have different safety status in cosmetics vs industrial chemicals?
Phosphorus Pentoxide is classified GHS Danger (H314, H318, H330) in the chemicals database but is allowed in EU cosmetics.
Compliance Tools
Check Phosphorus Pentoxide compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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