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PHOSPHORUS PENTOXIDE.

Avoid CAS 1314-56-3 / BUFFERING, CHELATING

Phosphorus Pentoxide is an intensely reactive chemical compound renowned for its extreme dehydrating capabilities. It reacts violently and exothermically with any moisture, including that found on biological tissues, resulting in the rapid formation of highly corrosive phosphoric acid.

Corrosive Dehydrating agent

Science

Upon contact with water, such as the inherent moisture present on human skin or mucous membranes, Phosphorus Pentoxide (P4O10) undergoes an immediate and violent exothermic reaction. This process generates concentrated phosphoric acid, which acts as a potent corrosive agent, leading to severe chemical burns and significant tissue irritation.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

This substance is categorically unsuitable for inclusion in any cosmetic formulation. Phosphorus Pentoxide is a severely hazardous industrial chemical that causes immediate and severe chemical burns upon contact with skin, rendering any concept of 'dusting' or cosmetic application highly dangerous and inappropriate.


The Formula

Solubility
Reacts with water
Optimal pH N/A
0 7 14

Stability

Phosphorus Pentoxide is highly hygroscopic and extremely moisture-sensitive, reacting violently with water to form phosphoric acid. It maintains stability only when stored in a completely dry environment, meticulously protected from any moisture.

Conflicts

  • Water
  • Ammonia
  • Calcium oxide
  • Chlorine trifluoride
  • Hydrogen fluoride
  • Oxygen difluoride
  • Perchloric acid
  • Potassium
  • Propargyl alcohol
  • Sodium
  • Sodium carbonate
  • Sodium hydroxide
  • Mixtures of water and organic material
  • Strong acids
  • Strong bases
  • Oxidizing agents
  • Combustible materials
  • Reducing agents
  • Halogens
  • Metal oxides
  • Peroxides
  • Metals
  • Metal salts

Safety

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk High

Phosphorus Pentoxide is classified as a hazardous and severely corrosive substance. Safety data sheets explicitly advise against its use in products intended for direct skin contact, as it causes severe burns to the skin, eyes, and respiratory tract. There is no indication of CIR, SCCS, or FDA status for cosmetic use; instead, it is strictly regulated as a hazardous chemical. Inhalation or ingestion can lead to systemic poisoning and fatal damage to internal organs.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Avoid

Due to its extreme dehydrating capacity and violent reaction with moisture, which leads to immediate and severe corrosive burns on contact, Phosphorus Pentoxide is unequivocally unsuitable and highly dangerous for any skincare application.


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