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Key Documents

1.05029

Supelco

Potassium hydroxide

pellets for analysis (max. 0.05% Na) EMSURE® ACS,Reag. Ph Eur

Synonym(s):

Potash caustic, Caustic potash

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About This Item

Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
MDL number:
UNSPSC Code:
12352305
EC Index Number:
215-181-3
NACRES:
NA.21

grade

ACS reagent

Quality Level

Agency

reag. Ph. Eur.

vapor pressure

1 mmHg ( 719 °C)

product line

EMSURE®

Assay

85.0-100.5% KOH basis

form

solid

potency

333 mg/kg LD50, oral (Rat)

pH

14 (20 °C, 56 g/L in H2O)

mp

361 °C (lit.)

anion traces

carbonate (K2CO3): ≤1.0%
chloride (Cl-): ≤0.01%
phosphate (PO43-): ≤0.0005%
silicate (as SiO2): ≤0.005%
sulfate (SO42-): ≤0.0005%

cation traces

Al: ≤0.001%
Ca: ≤0.001%
Fe: ≤0.0005%
Mg: ≤0.002%
N: ≤0.002%
Na: ≤0.05%
Ni: ≤0.0005%
heavy metals (as Ag): ≤0.0005%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

SMILES string

[OH-].[K+]

InChI

1S/K.H2O/h;1H2/q+1;/p-1

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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Application


  • Investigating chemical pre-treatment methods: Valorization of wheat straw to enhance polyhydroxyalkanoate (PHA) production with novel isolate Bacillus paranthracis RSKS-3.: This study highlights the use of potassium hydroxide in the chemical pre-treatment of wheat straw to optimize the production of polyhydroxyalkanoates, providing insights into sustainable biopolymer synthesis (Sachan RSK et al., 2024).

  • Structure-property relationships in dicyanopyrazinoquinoxalines and their hydrogen-bonding-capable dihydropyrazinoquinoxalinedione derivatives.: Research explores the impact of potassium hydroxide in synthesizing new organic compounds, showcasing its role in advancing material science and analytical methods (Akhmedov TN et al., 2024).

  • A state-of-the-art review of the physical and durability characteristics and microstructure behavior of ultra-high-performance geopolymer concrete.: Reviews the pivotal role of potassium hydroxide in modifying the microstructure and enhancing the durability of geopolymer concretes, contributing to advances in construction materials (Hakeem IY et al., 2024).


Analysis Note

Assay (KOH): 85.0 - 100.5 %
Assay (total alkalinity calc. as KOH): 85.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
Carbonate (KCO): ≤ 1.0 %
Chloride (Cl): ≤ 0.01 %
Phosphate (PO): ≤ 0.0005 %
Silicate (SiO): ≤ 0.005 %
Sulfate (SO): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0005 %
Heavy metals (as Ag): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.001 %
Ca (Calcium): ≤ 0.001 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.002 %
Na (Sodium): ≤ 0.05 %
Ni (Nickel): ≤ 0.0005 %

Legal Information

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

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

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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