Merck
All Photos(1)

Documents

Safety Information

757551

Sigma-Aldrich

Potassium hydroxide

anhydrous, ≥99.95% trace metals basis

Sign Into View Organizational & Contract Pricing

Synonym(s):
Caustic potash
Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

grade

anhydrous

Quality Level

vapor pressure

1 mmHg ( 719 °C)

Assay

≥99.95% trace metals basis

form

crystals or chunks
powder and chunks
powder or crystals

impurities

≤300.0 ppm Trace Metal Analysis

mp

361 °C (lit.)

solubility

H2O: soluble 1120 g/L

SMILES string

[OH-].[K+]

InChI

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

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
P1767P5958306568
Potassium hydroxide anhydrous, ≥99.95% trace metals basis

Sigma-Aldrich

757551

Potassium hydroxide

Potassium hydroxide ≥85% KOH basis, pellets, white

Sigma-Aldrich

P1767

Potassium hydroxide

Potassium hydroxide BioXtra, ≥85% KOH basis

Sigma-Aldrich

P5958

Potassium hydroxide

Potassium hydroxide semiconductor grade, pellets, 99.99% trace metals basis (Purity excludes sodium content.)

Sigma-Aldrich

306568

Potassium hydroxide

vapor pressure

1 mmHg ( 719 °C)

vapor pressure

1 mmHg ( 719 °C)

vapor pressure

1 mmHg ( 719 °C)

vapor pressure

1 mmHg ( 719 °C)

assay

≥99.95% trace metals basis

assay

≥85% KOH basis

assay

≥85% KOH basis

assay

99.99% trace metals basis (Purity excludes sodium content.)

form

crystals or chunks, powder and chunks, powder or crystals

form

pellets

form

pellets

form

pellets

impurities

≤300.0 ppm Trace Metal Analysis

impurities

≤2.0% K2CO3

impurities

≤0.0005% Phosphorus (P), ≤0.1% Insoluble matter, ≤2.0% K2CO3

impurities

15% water

mp

361 °C (lit.)

mp

361 °C (lit.)

mp

361 °C (lit.)

mp

361 °C (lit.)

General description

Potassium hydroxide (KOH) is also known as caustic potash. It is a strong alkali or a solid base compound that can be used in a variety of industrial applications. It finds its usage in the production of soaps, cleaners and detergents.

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

8A - Combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Deleterious substance

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

757551-25G:4.548173960487E12
757551-5G:4.548173960494E12


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’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 4

1 of 4

Potassium hydroxide ACS reagent, ≥85%, pellets

Sigma-Aldrich

221473

Potassium hydroxide

Potassium hydroxide puriss., meets analytical specification of Ph. Eur., BP, 85-100.5%, pellets

Sigma-Aldrich

06005

Potassium hydroxide

Potassium hydroxide ≥85% KOH basis, pellets, white

Sigma-Aldrich

P1767

Potassium hydroxide

Potassium hydroxide pellets EMPROVE® ESSENTIAL Ph Eur,BP,JP,NF,FCC,E 525

SAFC

1.05032

Potassium hydroxide

The many uses of Potassium Compounds
Potassium (2007)
Mizuki Takemoto et al.
PloS one, 10(6), e0131094-e0131094 (2015-06-27)
Channelrhodopsin (ChR) is a light-gated cation channel that responds to blue light. Since ChR can be readily expressed in specific neurons to precisely control their activities by light, it has become a powerful tool in neuroscience. Although the recently solved
Ashok R Patel et al.
Journal of agricultural and food chemistry, 63(19), 4862-4869 (2015-05-02)
The aim of this study was to use a detailed rheological characterization to gain new insights into the gelation behavior of natural waxes. To make a comprehensive case, six natural waxes (differing in the relative proportion of chemical components: hydrocarbons
Nilesh M Agalave et al.
Pain, 155(9), 1802-1813 (2014-06-24)
Extracellular high mobility group box-1 protein (HMGB1) plays important roles in the pathogenesis of nerve injury- and cancer-induced pain. However, the involvement of spinal HMGB1 in arthritis-induced pain has not been examined previously and is the focus of this study.
Peng Li et al.
Angewandte Chemie (International ed. in English), 54(2), 574-577 (2014-11-15)
Self-assembly of a trigonal building subunit with diaminotriazines (DAT) functional groups leads to a unique rod-packing 3D microporous hydrogen-bonded organic framework (HOF-3). This material shows permanent porosity and demonstrates highly selective separation of C2H2/CO2 at ambient temperature and pressure.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service