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695017

Sigma-Aldrich

Ácido fosfórico

ACS reagent, ≥85 wt. % in H2O

Sinónimos:

Ácido ortofosfórico

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100 ML
$53,07
500 ML
$66,44
2.5 L
$202,80
12 X 100 ML
$279,36
201 L
$6.450,92

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100 ML
$53,07
500 ML
$66,44
2.5 L
$202,80
12 X 100 ML
$279,36
201 L
$6.450,92

About This Item

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:
329761708
NACRES:
NA.21

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grado

ACS reagent

densidad de vapor

3.4 (vs air)

presión de vapor

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

Ensayo

≥85% H3PO4 basis (by NaOH, titration)

Formulario

liquid

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 (SO42-): ≤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)

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)

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Descripción general

Phosphoric acid (H3PO4) is useful in industry for treating the metal surfaces to obtain better adhesion of paint and resin coatings.[1]

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.[2] 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.[3]
  • As external standard during the acid-labile phosphorylation of histone H4 by 31P NMR spectroscopy.[4]
  • As reference standard to investigate the surface species present on silica/alumina-supported sodium phosphates by pre- and postreaction MAS31P-NMR and FTIR spectroscopies.[5]
  • As catalyst in the vapor-phase Fries rearrangement of phenylacetate at 623K over a series of surface modified and unmodified ZSM-5.[6]

Otras notas

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

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palabra de señalización

Danger

Frases de peligro

H290,H302,H314

Clasificaciones de peligro

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Código de clase de almacenamiento

8B - Non-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

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Certificados de análisis (COA)

Lot/Batch Number
MKCX2901
MKCW6813
MKCX1200
MKCW3676
MKCV8021

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A simple method of increasing the adhesion of acrylic filling materials to enamel surfaces.
Buonocore MG.
Journal of Dental Research, 34(6), 849-853 (1955)
FTIR and 31 P-NMR spectroscopic analyses of surface species in phosphate-catalyzed lactic acid conversion.
Gunter GC, et al.
J. Catal., 164(1), 207-219 (1996)
Internal versus external surface active sites in ZSM-5 zeolite: Part 1. Fries rearrangement catalyzed by modified and unmodified H3PO4/ZSM-5.
Ghiaci M, et al.
Applied Catalysis A: General, 298, 32-39 (2006)
J M Fujitaki et al.
Biochemistry, 20(12), 3658-3664 (1981-06-09)
Phosphorus-31 nuclear magnetic resonance (31P NMR) is used to investigate acid-labile phosphorylation of histone H4. 31P NMR detects phosphorylated histidine residues in in vitro enzymatically phosphorylated H4. The source of kinase is nuclei from either regenerating rat liver or Walker-256
D S Marinier et al.
Journal of lipid research, 29(9), 1237-1243 (1988-09-01)
In order to study the lipid composition of human white matter, we have developed a 31P NMR spectroscopy method, which allows the determination and quantitation of the main phospholipids found in biological membranes. The technique is based upon the use
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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