Products Description of Phosphoric acid CAS#7664-38-2
Phosphoric acid is a common inorganic tribasic medium strong acid. It is a colorless and transparent viscous liquid at room temperature, non-volatile and miscible with water and ethanol in any proportion. With stable physicochemical properties and excellent chelating, buffering and acidifying capabilities, it is a fundamental bulk raw material for chemical, food and industrial manufacturing fields.
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Phosphoric acid CAS#7664-38-2 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 |
| biological source | synthetic |
| Water Solubility | MISCIBLE |
| Specific Heat Capacity | Cp(crystal): 1.08 J/(g·K); Cp(liquid): 1.48 J/(g·K), at 25℃ |
| λmax | λ: 260 nm Amax: ≤0.05 |
| λ: 280 nm Amax: ≤0.04 |
| Merck | 147,344 |
| BRN | 1921286 |
| Exposure limits | ACGIH:TLV-TWA 1 mg/m3; TLV-STEL 3 mg/m3 |
| OSHA:PEL-TWA 1 mg/m3 |
| NIOSH:REL-TWA 1 mg/m3; REL-STEL 3 mg/m3 |
| Dielectric constant | 61 |
| Major Application | battery manufacturing |
| Cosmetics Ingredients Functions | BUFFERING |
| InChI | 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4) |
| InChIKey | NBIIXXVUZAFLBC-UHFFFAOYSA-N |
| SMILES | OP(O)(O)=O |
| 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 |
| OEB | C |
| OEL | TWA: 1 mg/m3, STEL: 3 mg/m3 |
| RIDADR | UN 1805 8/PG III (PHOSPHORIC ACID, SOLUTION) |
| RIDADR | UN 3453 8/PG III (PHOSPHORIC ACID, SOLID) |
| WGK Germany | 3 |
| RTECS | TB6300000 |
| F | 3月10日 |
| TSCA | TSCA listed |
| HS Code | 2809 20 00 |
| HazardClass | 8 |
| PackingGroup | III |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| Hazard Classifications | Acute Tox. 4 Oral |
| Eye Dam. 1 | |
| Met. Corr. 1 | |
| Skin Corr. 1B | |
| 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). |
| GRAS (FDA, § 182.1073, 2000). | |
| LD501530mg / kg (rat, oral). | |
| In case of daily intake of 2 ~ 4 g, it can cause mild diarrhea. The amount of sour agent used as a cola drink is 0.02% to 0.06%. | |
| IDLH | 1,000 mg/m3 |
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Product Application of Phosphoric acid CAS#7664-38-2
Widely used as acidifier, chelating agent, phosphating treatment agent and chemical synthetic raw material. It is mainly applied in food acidity adjustment, metal surface phosphating treatment, industrial water purification and scale inhibition and massively used in the synthesis of phosphate fertilizers, fine phosphate products, electronic cleaning materials and daily chemical raw materials.
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