Melting point :340 °C (lit.)
Boiling point :122 °C (1 mmHg)
Density :2.3 g/mL at 25 °C (lit.)
vapor density :4.9 (vs air)
vapor pressure :1 mm Hg ( 384 °C)
refractive index :1.433-1.436
Flash point :340-360°C
storage temp. :no restrictions.
solubility :Soluble in sulfuric acid. Insoluble in acetone and ammonia.
form :Very Deliquescing Powder
color :White
Specific Gravity :2.39
Odor :Pungent odour
PH Range :<2
PH :1 (5g/l, H2O, 20℃)
Water Solubility :Soluble in sulfuric acid. Insoluble in acetone and ammonia. Decomposes in water.
Sensitive :Moisture Sensitive
Merck :14,7355
Sublimation :340-360 ºC
Stability :Stability Stable, but reacts violently with water, alcohols, metals, sodium, potassium, ammonia, oxidizing agents, HF, peroxides, magnesium, strong bases.
InChIKey :YWEUIGNSBFLMFL-UHFFFAOYSA-N
CAS DataBase Reference :1314-56-3(CAS DataBase Reference)
NIST Chemistry Reference :Diphosphorus pentoxide(1314-56-3)
EPA Substance Registry System :Phosphorus pentoxide (1314-56-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P363 Wash contaminated clothing before reuse.