phosphoric acid (H3PO4)

phosphoric acid (H3PO4)

Phosphoric acid is a colorless, viscous liquid.  Phosphoric acid is widely used in the food industry to acidify beverages such as soft drinks. It is also used in the chemical industry to produce phosphates, and in the agricultural industry to fertilize soils.

Common synonyms: Orthophosphoric acid, Trihydroxylphosphine oxide

Properties of phosphoric acid (H3PO4):

  • Reactivity: Phosphoric acid is a strong acid and reacts violently with bases, metals and certain organic compounds.
  • Melting point: The melting point of phosphoric acid is around 42°C.
  • Solubility: Phosphoric acid is highly soluble in water.
  • Health risks: Phosphoric acid may cause burns to skin, eyes or respiratory tract. Severe ingestion or inhalation may cause serious injury.
  • Protection and prevention: It is important to handle phosphoric acid with care, wearing personal protective equipment such as gloves, goggles and a mask. In the event of contact, rinse the affected area with plenty of water and seek medical advice if symptoms are severe.

> About these data

Formula H3PO4
International name phosphoric acid
French name Acide phosphorique
CAS 7664-38-2
EINECS SOLIDE
Filter B-P3
IP (eV)
Vapour density (air = 1) -
Conversion (1 ppm =) 4 mg/m3
LIE
LSE
VLEP CT (15mn) 0.5 ppm
VLEP (8h) 0.2 ppm
STEL (15 min.) 2 mg/m3
TWA (8h) 1 mg/m3

respirator mask for phosphoric acid (H3PO4)

To protect yourself from phosphoric acid (H3PO4), a full face mask fitted with an ABEK2Hg-P3 filter, offering maximum protection against organic and inorganic gases and vapors, acid gases, ammonia, mercury vapors, as well as solid and liquid, radioactive and toxic particles, and micro-organisms (bacteria, viruses), will be ideal for short interventions. For longer missions, it is preferable to use a device with assisted ventilation, which ensures optimum comfort.

TR 2002 Full face respirator

Masque complet de protection respiratoire TR 2002

X-plore 5500 Full face mask

Masque complet bi-filtres X-plore 5500

X-plore 6300 Full face respirator

Masque complet protection respiratoire X-plore 6300

TR82 EPDM Anti-scratch and anti-solvent gas mask

Masque gaz anti rayure et anti solvant TR82 EPDM

CleanSpace Pro Powered air purifying mask

Masque CleanSpace Pro à ventilation assistée

ATEX CleanSpace Ex PAPR mask

Masque à ventilation assistée ATEX CleanSpace Ex

Powered air purifying respirator Proflow 2

Système à ventilation assistée Proflow2

X-plore 8000 Powered air purifying device

Appareil à ventilation assistée X-plore 8000
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