Products Description of Phosphoric acidCAS#7664-38-2
Phosphoric acid is additionally referred to as orthophosphoric acid (molecular system H3PO4). The pure product is a colorless, transparent, viscous liquid or orthorhombic crystal, odorless and very sour. 85% phosphoric acid is a colorless, obvious or barely light-colored, viscous liquid. Melting factor 42.35℃, precise gravity 1.70, excessive boiling factor acid, miscible with water in any ratio, boiling factor 213℃ (lose half of water), then pyrophosphoric acid is generated. When heated to 300℃, it turns into metaphosphoric acid. Relative density 181.834.
Phosphoric acid Chemical Properties
Melting point | ~40 °C(lit.) |
Boiling point | 158 °C(lit.) |
density | 1.685 g/mL at 25 °C(lit.) |
vapor density | 3.4 (vs air) |
vapor pressure | 2.2 mm Hg ( 20 °C) |
refractive index | n20/D 1.433 |
FEMA | 2900 | PHOSPHORIC ACID |
storage temp. | no restrictions. |
solubility | H2O: soluble |
pka | 2.1-7.2-12.3(at 25℃) |
form | Solid or Viscous Liquid |
Specific Gravity | 1.7 |
color | ≤10(APHA) |
PH | 3.06(1 mM solution);2.26(10 mM solution);1.63(100 mM solution); |
Odor | Odorless |
PH Range | 1.5 |
Water Solubility | MISCIBLE |
λmax | λ: 260 nm Amax: ≤0.05 |
Merck | 14,7344 |
BRN | 1921286 |
Exposure limits | TLV-TWA 1 mg/m3 (ACGIH, MSHA, and OSHA); TLV-STEL 3 mg/m3 (ACGIH). |
Dielectric constant | 61.0 |
InChIKey | NBIIXXVUZAFLBC-UHFFFAOYSA-N |
LogP | -2.15 |
CAS DataBase Reference | 7664-38-2(CAS DataBase Reference) |
NIST Chemistry Reference | Phosphoric acid(7664-38-2) |
EPA Substance Registry System | Phosphoric acid (7664-38-2) |
Safety Information
Hazard Codes | C,Xn,T,F |
Risk Statements | 34-35-22-39/23/24/25-36/38-23/24/25-11 |
Safety Statements | 7-16-26-36/37-45-36/37/39-1/2-24/25 |
RIDADR | UN 3453 8/PG 3 |
WGK Germany | 3 |
RTECS | TB6300000 |
F | 3-10 |
TSCA | Yes |
HS Code | 2809 20 00 |
HazardClass | 8 |
PackingGroup | III |
Hazardous Substances Data | 7664-38-2(Hazardous Substances Data) |
Toxicity | ADI 0 to 70 mg / kg (total phosphate content in terms of phosphorus, FAO / WHO, 2001). |
IDLA | 1,000 mg/m3 |
Product Application of Phosphoric acidCAS#7664-38-2
Phosphoric acid is an acidulant and an inorganic acid. It is produced by burning phosphorus in excess air to generate phosphorus pentoxide, which is then dissolved in water to form orthophosphoric acid of varying concentrations. It is a strong acid and soluble in water. Its acid salts are called phosphates. It is used as a flavoring acid in cola and root beer beverages to provide the desired acidity and sourness.
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