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223476

Sigma-Aldrich

Potassium bisulfate

reagent grade

Sinónimos:

Potassium hydrogen sulfate

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About This Item

Fórmula lineal:
KHSO4
Número de CAS:
7646-93-7
Peso molecular:
136.17
Número CE:
231-594-1
Número MDL:
MFCD00011404
Código UNSPSC:
12352302
eCl@ss:
38030413
ID de la sustancia en PubChem:
329752310
NACRES:
NA.21
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grado

reagent grade

Nivel de calidad

200

Formulario

powder or crystals

concentración

35.0-37.0% H2SO4 (titration)

mp

214 °C (lit.)

número de ácido

35‑37%(as H2SO4)

densidad

2.32 g/mL at 25 °C (lit.)

cadena SMILES

[K+].OS([O-])(=O)=O

InChI

1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1

Clave InChI

CHKVPAROMQMJNQ-UHFFFAOYSA-M

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Descripción general

Potassium bisulfate is a water soluble inorganic salt mainly used as a preservative, as a flux and also in the manufacture of fertilizers.[1]
Potassium bisulfate is an inorganic potassium salt. On heating it from 300 to 700°C, it transforms to molten form and the reactions occurring in this transition have been investigated by Raman spectra.[2] Its electrical conductance values have been evaluated (T = 0-700C, Pressure = upto 4000bars).[3]

Aplicación

Potassium bisulfate (Potassium hydrogen sulfate) may be employed as a catalyst in the synthesis of butyl paraben[4] and methyl cinnamate.[5] It may also be used for the gravimetric estimation of beryllium in beryl.[6]
Potassium bisulfate may be used:
  • As a catalyst for the preparation of butyl paraben from p-hydroxybenzoic acid and n-butyl alcohol.[4]
  • As a promoter for the synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives via Biginelli reaction in ethylene glycol.[7]
  • As an acid catalyst for the synthesis of ethyl tert-butyl ether (ETBE) from ethanol and tert-butyl alcohol via reactive distillation.[8]
  • As a dehydrating agent for the synthesis of pyruvic acid from tartaric acid.[9]

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palabra de señalización

Danger

Frases de peligro

H314,H335

Clasificaciones de peligro

Eye Dam. 1 - Skin Corr. 1B - STOT SE 3

Órganos de actuación

Respiratory system

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

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Certificados de análisis (COA)

Lot/Batch Number
STBL0464
STBK3233
STBK2194
STBK1756
STBJ7353

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Reactive distillation for synthesizing ethyl tert-butyl ether from low-grade alcohol catalyzed by potassium hydrogen sulfate.
Matouq M, et al.
Industrial & Engineering Chemistry Research, 35(3), 982-984 (1996)
Synthesis of Methyl Cinnamate using Potassium Bisulfate as Catalyst [J].
4Danmei LSL.
Guangzhou Chemical Industry/ Guangzhou Huagong, 2, 005-005 (2003)
Craig BD and Anderson DS
Handbook of Corrosion Data, 634-634 null
Raman spectral studies of molten potassium bisulfate and vibrational frequencies of S2O7 groups.
Walrafen GE, et al.
J. Chem. Phys. , 37(3), 662-670 (1962)
PYRUVIC ACID
Organic Syntheses, 4, 63-63 (1925)
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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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