Product Description of Phosphoric Acid CAS# 78-42-2
Phosphoric acid has broad applications across the chemical industry, functioning as a flame retardant, plasticizer and extractant. Its major end use lies in hydrogen peroxide manufacturing. Formulated as trioctyl phosphate, it acts as an efficient solvent for hydroanthraquinone. It delivers favourable solubility toward hydroanthrone, achieves a high partition coefficient of hydrogen peroxide between aqueous and solvent phases, and features elevated boiling and flash points. These attributes guarantee efficient and safe operation of relevant industrial processes.
PHOSPHORIC ACID Chemical Propertie
Melting point | -70°C |
Boiling point | 215 °C4 mm Hg(lit.) |
density | 0.92 g/mL at 20 °C(lit.) |
vapor pressure | 2.1 mm Hg ( 20 °C) |
refractive index | n20/D 1.444(lit.) |
Fp | >230 °F |
storage temp. | Store below +30°C. |
solubility | <0.001g/l |
form | Liquid |
Specific Gravity | 0.93 |
color | Colourless |
PH | 7 (H2O, 20℃) |
Water Solubility | <0.1 g/100 mL at 18 ºC |
BRN | 1715839 |
CAS DataBase Reference | 78-42-2(CAS DataBase Reference) |
NIST Chemistry Reference | 2-Ethylhexanol phosphate (3:1)(78-42-2) |
EPA Substance Registry System | Tris(2-ethylhexyl) phosphate (78-42-2) |
Safety Information
Hazard Codes | Xi |
Risk Statements | 38 |
Safety Statements | 23-43-24/25 |
WGK Germany | 2 |
RTECS | MP0770000 |
Autoignition Temperature | 370 °C |
TSCA | Yes |
HS Code | 29190090 |
Hazardous Substances Data | 78-42-2(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 37000 mg/kg LD50 dermal Rabbit 20000 mg/kg |
Product Application of Phosphoric Acid CAS# 78-42-2
In anthraquinone-process hydrogen peroxide manufacturing, phosphoric acid is capable of substituting hydroterpenitol. This substitution yields high-purity, high-concentration finished products while lowering material self-consumption. Moreover, phosphoric acid may act as a cold-resistant plasticizer for PVC, improving the material’s performance under low-temperature service conditions.
