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84727

Supelco

Ácido sulfúrico

for the determination of nitrogen, ≥97.0%

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About This Item

Fórmula lineal:
H2SO4
Número de CAS:
7664-93-9
Peso molecular:
98.08
Beilstein:
2037554
Número CE:
231-639-5
Número MDL:
MFCD00064589
Código UNSPSC:
12000000
ID de la sustancia en PubChem:
329769317
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

for inorganic trace analysis

Nivel de calidad

100

Agency

suitable for SM 4500 - NH3

densidad de vapor

<0.3 (25 °C, vs air)

presión de vapor

1 mmHg ( 146 °C)

descripción

Nominally 95-98% H2SO4

Ensayo

≥97.0%

Formulario

liquid

calidad

for the determination of nitrogen

impurezas

≤0.0005% total nitrogen (N)

residuo de ign. (900 °C)

≤0.0005%

color

clear

bp

~290 °C (lit.)

densidad

1.840 g/mL at 25 °C (lit.)

cadena SMILES

OS(O)(=O)=O

InChI

1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)

Clave InChI

QAOWNCQODCNURD-UHFFFAOYSA-N

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Descripción general

Sulfuric acid can be produced by dry distillation of iron sulfate heptahydrate, copper sulfate pentahydrate. When these compounds were heated they decompose to form iron and copper oxides eliminating water and sulphur trioxide which combine together to form dilute solution of sulphuric acid. It is suitable as dehydrating agent, catalyst, active reactant in chemical industry. It is also suitable to control pH of saline solutions to strong fuming acids.[1]

Aplicación

Sulfuric acid may be used as digestive reagent in Kjeldahl method to determine nitrogen.[2]

Pictogramas

Corrosion
GHS05

Palabra de señalización

Danger

Frases de peligro

H290,H314

Clasificaciones de peligro

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

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

Equipo de protección personal

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Certificados de análisis (COA)

Lot/Batch Number
STBL4800
STBL4801
STBL4391
STBL3532
STBL3026

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A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents (2013)
Nitrogen determination by a continuous digestion and analysis system.
Ferrari, Andres.
Annals of the New York Academy of Sciences, 87, 792-800 (1960)
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Science (New York, N.Y.), 344(6185), 717-721 (2014-05-17)
Atmospheric new-particle formation affects climate and is one of the least understood atmospheric aerosol processes. The complexity and variability of the atmosphere has hindered elucidation of the fundamental mechanism of new-particle formation from gaseous precursors. We show, in experiments performed
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This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.

Questions

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  1. 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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  2. 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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