Potassium phthalate monobasic

Name: Potassium phthalate monobasic
Brand: SIAL

ACS reagent grade, 99.95-100.05% dry basis, crystals, acidimetric standard

Sinónimos:

KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate

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Fórmula lineal:

HOOCC₆H₄COOK

Número CAS:

877-24-7

Peso molecular:

204.22

NACRES:

NA.21

PubChem Substance ID:

24850834

UNSPSC Code:

12352100

EC Number:

212-889-4

MDL number:

MFCD00013070

Beilstein/REAXYS Number:

3637128

Assay:

99.95-100.05% dry basis

Grade:

ACS reagent

Form:

crystals

Solubility:

water: soluble (93 g/l at 30 °C (86 °F))

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Nombre del producto

Potassium phthalate monobasic, ACS reagent, acidimetric standard

InChI key

IWZKICVEHNUQTL-UHFFFAOYSA-M

InChI

1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1

SMILES string

[K+].OC(=O)c1ccccc1C([O-])=O

grade

ACS reagent

assay

99.95-100.05% dry basis

form

crystals

quality

acidimetric standard

impurities

≤0.002% S compounds
≤0.003% Cl compounds
≤0.005% insolubles

pH

4.00-4.02 (25.0 °C±0.2 °C, 0.05 M)

mp

295-300 °C (dec.) (lit.)

solubility

water: soluble (93 g/l at 30 °C (86 °F))

Quality Level

200

anion traces

chlorine and bromine (as Cl^-): ≤0.003%
sulfur compounds (as SO₄^2-): ≤0.002%

cation traces

Fe: ≤5 ppm
Na: ≤0.005%
heavy metals: ≤5 ppm (by ICP)

functional group

carboxylic acid

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1 of 4

Este artículo	60360	60359	1.02400
Sigma-Aldrich 179922 Potassium phthalate monobasic	Sigma-Aldrich 60360 Potassium phthalate monobasic	Sigma-Aldrich 60359 Potassium phthalate monobasic	Supelco 1.02400 Potassium hydrogen phthalate
form crystals	form solid	form powder or crystals	form solid
assay 99.95-100.05% dry basis	assay ≥99.5% (T)	assay ≥99.5% (T)	assay -
Quality Level 200	Quality Level 200	Quality Level 200	Quality Level 300
grade ACS reagent	grade -	grade -	grade -
pH 4.00-4.02 (25.0 °C±0.2 °C, 0.05 M)	pH 4	pH 3.5-5.0 (25 °C, 0.1 M in H₂O)	pH 4.0 (20 °C, 50 g/L in H₂O)
impurities ≤0.002% S compounds, ≤0.005% insolubles, ≤0.003% Cl compounds	impurities -	impurities insoluble matter, passes filter test	impurities -

Application

Potassium phthalate monobasic may be used as a primary standard in acidimetric titration[1] and also to prepare potassium phthalate buffer solution for pH calibration.[2][3]

Clase de almacenamiento

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

387.1 °F - Pensky-Martens closed cup

flash_point_c

197.3 °C - Pensky-Martens closed cup

ppe

Eyeshields, Gloves, type N95 (US)

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Determination of standard pH values for potassium hydrogen phthalate reference buffer solutions in 10, 20, 50, 64 and 84.2 wt per cent methanol/water mixed solvents at temperatures from 283.15 to 313.15 K.

Mussini T, et al.

Electrochimica Acta, 28(11), 1593-1598 (1983)

2, 4, 6-Trinitrobenzoic acid as a primary standerd in acidimetry.

Smith GF and Wilkins DH.

Analytica Chimica Acta, 8, 209-216 (1953)

Development of an ionic liquid-based dispersive liquid-liquid microextraction method for the determination of nifurtimox and benznidazole in human plasma.

J M Padró et al.

Talanta, 107, 95-102 (2013-04-20)

Dispersive ionic liquid-liquid microextraction combined with liquid chromatography and UV detection was used for the determination of two antichagasic drugs in human plasma: nifurtimox and benznidazole. The effects of experimental parameters on extraction efficiency-the type and volume of ionic liquid

Are baleen whales exposed to the threat of microplastics? A case study of the Mediterranean fin whale (Balaenoptera physalus).

Maria Cristina Fossi et al.

Marine pollution bulletin, 64(11), 2374-2379 (2012-09-12)

Baleen whales are potentially exposed to micro-litter ingestion as a result of their filter-feeding activity. However, the impacts of microplastics on baleen whales are largely unknown. In this case study of the Mediterranean fin whale (Balaenoptera physalus), we explore the

Prenatal urinary phthalate metabolites levels and neurodevelopment in children at two and three years of age.

Martha M Téllez-Rojo et al.

The Science of the total environment, 461-462, 386-390 (2013-06-12)

Previous studies suggest that prenatal phthalate exposure affects neurodevelopment and behavior during the first years of life. To evaluate the effect of maternal urinary concentrations of phthalate metabolites during pregnancy on mental and psychomotor development in children 24-36 months of

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Anónimo

hace 5 meses

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

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1. Technical Support
  
  hace 5 meses
  
  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/418/501/product-dating-information-06-25-mk.pdf
  
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Anónimo

hace 10 meses

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

1 respuesta
1. Technical Support
  
  hace 10 meses
  
  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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