438081

Phosphoric acid

ACS reagent, ≥85 wt. % in H₂O

• Sinônimo(s): Orthophosphoric acid
• Fórmula linear: H₃PO₄
• Número CAS: 7664-38-2
• Peso molecular: 98.00
• Beilstein: 1921286
• Número EC: 231-633-2
• Número MDL: MFCD00011340
• ID de substância PubChem: 329756407

Propriedades

• Nível de qualidade: 200
• grau: ACS reagent
• densidade de vapor: 3.4 (vs air)
• pressão de vapor: 2.2 mmHg ( 20 °C); 5 mmHg ( 25 °C)
• teor: ≥85% (with NaOH, titration)
• forma: liquid
• características do produto alternativo mais ecológico: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• concentração: ≥85 wt. % in H₂O
• technique(s): NMR: suitable
• Impurezas: Reducing substances, passes test; ≤0.001% volatile acids (as CH₃COOH)
• cor: APHA: ≤10
• pb: 158 °C (lit.)
• pf: ~40 °C (lit.)
• densidade: 1.685 g/mL at 25 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤3 ppm; nitrate (NO₃^-): ≤5 ppm; sulfate (SO₄^2-): ≤0.003%
• traços de cátion: 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)
• categoria alternativa mais ecológica: Enabling
• SMILES string: OP(O)(O)=O
• InChI: 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
• InChI key: NBIIXXVUZAFLBC-UHFFFAOYSA-N
• Gene Information: human ... SRC(6714)

Descrição

Descrição geral

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.

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.

Aplicação

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.

Embalagem

500, 6×500 mL in PVC-coated bottle

2.5, 6×2.5 L in PVC-coated bottle

Outras notas

Concentrated phosphoric acid is approx. 85% H₃PO₄ (aqueous).

Informações de segurança

• Pictogramas: GHS05,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H290 - H302 - H314
• Declarações de precaução: P234 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Classificações de perigo: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Código de classe de armazenamento: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 1
• Ponto de fulgor (ºF): Not applicable
• Ponto de fulgor (ºC): Not applicable