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Merck

1.04873

Supelco

Potassium phosphate monobasic

for analysis EMSURE® ISO

Synonym(s):

Potassium phosphate monobasic, Potassium dihydrogen phosphate, mono-Potassium orthophosphate, Potassium biphosphate, Potassium phosphate monobasic, prim.-Potassium phosphate

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250 G
CHF 64.50
1 KG
CHF 161.00
5 KG
CHF 565.00
25 KG
CHF 3’230.00
50 KG
CHF 5’260.00

CHF 64.50


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250 G
CHF 64.50
1 KG
CHF 161.00
5 KG
CHF 565.00
25 KG
CHF 3’230.00
50 KG
CHF 5’260.00

About This Item

Linear Formula:
KH2PO4
CAS Number:
Molecular Weight:
136.09
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-913-4
NACRES:
NA.21
Form:
solid
Solubility:
208 g/L

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CHF 64.50


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Packaging: HDPE bottle

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Technical Service
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Agency

reag. ISO
suitable for SM 5210

Quality Level

product line

EMSURE®

Assay

≥99.5% dry basis (alkalimetric)
99.5-100.5% (alkalimetric)

form

solid

potency

>4640 mg/kg LD50, skin (Rabbit)

technique(s)

UV/Vis spectroscopy: suitable

loss

≤0.2% loss on drying, 110 °C
≤0.2% loss on drying, 130 °C

pH

4.2-4.6 (20 °C, 20 g/L in H2O)

mp

252.6 °C (lit.)

solubility

208 g/L

density

2.338 g/mL at 25 °C (lit.)

bulk density

1200 kg/m3

anion traces

chloride (Cl-): ≤0.0005%
sulfate (SO42-): ≤0.003%

cation traces

As: ≤0.0002%
Cu: ≤0.0003%
Fe: ≤0.0010%
N: ≤0.001%
Na: ≤0.02%
Pb: ≤0.001%
heavy metals (as Pb): ≤0.0010%

storage temp.

2-30°C

SMILES string

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

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChI key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

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1 of 4

This Item
042439221457618
form

solid

form

crystalline

form

-

form

solid

assay

≥99.5% dry basis (alkalimetric), 99.5-100.5% (alkalimetric)

assay

98-100.5% (calc. to the dried substance)

assay

-

assay

99.5-101.0% (T)

solubility

208 g/L

solubility

H2O: soluble 4.5 parts, alcohol: insoluble

solubility

-

solubility

H2O: 10%, clear, colorless

Quality Level

300

Quality Level

200

Quality Level

100, 300

Quality Level

-

anion traces

chloride (Cl-): ≤0.0005%, sulfate (SO42-): ≤0.003%

anion traces

chloride (Cl-): ≤10 mg/kg, fluoride (F-): ≤10 mg/kg, sulfate (SO42-): ≤200 mg/kg

anion traces

-

anion traces

-

pH

4.2-4.6 (20 °C, 20 g/L in H2O)

pH

4.2-4.5 (20 °C, 5%)

pH

-

pH

4.1-4.5

Application


  • β-lactoglobulin stabilized nanemulsions--Formulation and process factors affecting droplet size and nanoemulsion stability.: This research explores the stabilization mechanisms of β-lactoglobulin in nanemulsions, with implications for pharmaceutical and food sciences, potentially utilizing substances like potassium phosphate monobasic for stability and pH control (Ali et al., 2016).

  • Reverse phase liquid chromatographic determination of sulfathiazole residues in honey.: Discusses a method for detecting sulfathiazole in honey using reverse-phase liquid chromatography, highlighting the importance of analytical techniques that could involve reagents like potassium phosphate monobasic for sample preparation and analysis (Barry and MacEachern, 1983).


Analysis Note

Assay (alkalimetric, calculated on dried substance): 99.5 - 100.5 %
Assay (alkalimetric; dried substance): ≥ 99.5 %
pH-value (5 %; water): 4.2 - 4.5
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0010 %
As (Arsenic): ≤ 0.0002 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.0010 %
Na (Sodium): ≤ 0.02 %
Pb (Lead): ≤ 0.001 %
Reducing substances: passes test
Loss on drying (110 °C): ≤ 0.2 %
Loss on drying (130 °C): ≤ 0.2 %
Correspons to ISO

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Questions

1–3 of 3 Questions  
  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

      Helpful?

  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

      Helpful?

  3. Is this product traceability to NIST or ISO 17034

    1 answer
    1. Potassium phosphate monobasic, product 1.04873, is for analysis EMSURE ISO. All EMSURE® products with the designation “ISO” are compliant with ISO 6353. Product 1.04873 is not NIST traceable.

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