438081

Ácido fosfórico

ACS reagent, ≥85 wt. % in H₂O

• Sinónimos: Ácido ortofosfórico
• Fórmula lineal: H₃PO₄
• Número de CAS: 7664-38-2
• Peso molecular: 98.00
• Beilstein: 1921286
• Número CE: 231-633-2
• Número MDL: MFCD00011340
• Código UNSPSC: 12352106
• ID de la sustancia en PubChem: 329756407
• NACRES: NA.21

Propiedades

• grado: ACS reagent
• Nivel de calidad: 200
• densidad de vapor: 3.4 (vs air)
• presión de vapor: 2.2 mmHg ( 20 °C); 5 mmHg ( 25 °C)
• Ensayo: ≥85% (with NaOH, titration)
• Formulario: liquid
• características de los productos alternativos más sostenibles: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• concentración: ≥85 wt. % in H₂O
• técnicas: NMR: suitable
• impurezas: Reducing substances, passes test; ≤0.001% volatile acids (as CH₃COOH)
• color: APHA: ≤10
• bp: 158 °C (lit.)
• mp: ~40 °C (lit.)
• densidad: 1.685 g/mL at 25 °C (lit.)
• trazas de anión: chloride (Cl^-): ≤3 ppm; nitrate (NO₃^-): ≤5 ppm; sulfate (SO₄^2-): ≤0.003%
• trazas de catión: As: ≤1 ppm; Ca: ≤0.002%; Fe: ≤0.003%; K: ≤0.005%; Mg: ≤0.02%; Mn: ≤0.5 ppm; Na: ≤0.025%; Sb: ≤0.002%; heavy metals: ≤0.001% (by ICP)
• categoría alternativa más sostenible: Enabling,
• cadena SMILES: OP(O)(O)=O
• InChI: 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
• Clave InChI: NBIIXXVUZAFLBC-UHFFFAOYSA-N
• Información sobre el gen: human ... SRC(6714)

Descripción

Descripción general

Phosphoric acid (H₃PO₄), also known as orthophosphoric acid, is an inorganic acid. It has a wide range of industrial applications such as an intermediate to produce animal feedstock, to prepare stock solutions for workup procedures and to treat the metal surfaces for better adhesion of paint and resin coatings. In the food industry it is used as a preservative, an acidulant and flavor enhancer.

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Aplicación

Phosphoric acid may be employed as standard for the determination of phosphorus-31 nuclear magnetic resonance (³¹P NMR) chemical shifts of the common phospholipids. It may be employed in the following studies:

• As external standard for the analysis of lipid composition of human white matter by ³¹P NMR spectroscopy.
• As external standard during the acid-labile phosphorylation of histone H4 by ³¹P NMR spectroscopy.
• As reference standard to investigate the surface species present on silica/alumina-supported sodium phosphates by pre- and postreaction MAS³¹P-NMR and FTIR spectroscopies.
• As catalyst in the vapor-phase Fries rearrangement of phenylacetate at 623K over a series of surface modified and unmodified ZSM-5.
• As an eco-friendly reagent for the removal of protecting groups like tert-butyl carbamates, tert-butyl esters and tert-butyl ethers.

Otras notas

El ácido fosfórico concentrado es aproximadamente H₃PO₄ (acuoso) al 85%.

Información de seguridad

• Pictogramas: GHS05,GHS07
• Palabra de señalización: Danger
• Frases de peligro: H290,H302,H314
• Consejos de prudencia: P234 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Clasificaciones de peligro: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Código de clase de almacenamiento: 8A - Combustible corrosive hazardous materials
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable