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Merck

179922

Potassio ftalato monobasico

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

Sinonimo/i:

Acido ftalico, KHP, Potassio biftalato, Potassio idrogeno ftalato

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100 G

41,20 €

500 G

122,00 €

1 KG

172,00 €

41,20 €

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Informazioni su questo articolo

Formula condensata:
HOOCC6H4COOK
Numero CAS:
877-24-7
Peso molecolare:
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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Nome del prodotto

Potassio ftalato monobasico, 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 SO42-): ≤0.002%

cation traces

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

functional group

carboxylic acid

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Questo articolo
60360603591.02400
Potassio ftalato monobasico ACS reagent, acidimetric standard

Sigma-Aldrich

179922

Potassio ftalato monobasico

Potassio ftalato monobasico puriss. p.a., ≥99.5% (T)

Sigma-Aldrich

60360

Potassio ftalato monobasico

Potassio ftalato monobasico BioUltra, ≥99.5% (T)

Sigma-Aldrich

60359

Potassio ftalato monobasico

Potassium hydrogen phthalate Volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur

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]

Classe di stoccaggio

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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Certificati d'analisi (COA)

Lot/Batch Number
MKCZ5830
MKCZ5831
MKCX4050
0000370041
0000325000

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I documenti relativi ai prodotti acquistati recentemente sono disponibili nell’Archivio dei documenti.

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2, 4, 6-Trinitrobenzoic acid as a primary standerd in acidimetry.
Smith GF and Wilkins DH.
Analytica Chimica Acta, 8, 209-216 (1953)
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)
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
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
Randi J Bertelsen et al.
Environmental health perspectives, 121(2), 251-256 (2012-11-21)
High-molecular-weight phthalates in indoor dust have been associated with asthma in children, but few studies have evaluated phthalate biomarkers in association with respiratory outcomes. We explored the association between urinary concentrations of phthalate metabolites and current asthma. In a cross-sectional
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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 risposta

    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/418/501/product-dating-information-06-25-mk.pdf

      Utile?

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

    1 risposta

    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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