Potassium hydroxide pellets for analysis EMSURE® 500g





6 in stock (can be backordered)


 SKU Number ZA.002.582
Synonyms Potash caustic


Product Information
CAS number 1310-58-3
EC index number 019-002-00-8
EC number 215-181-3
Hill Formula HKO
Chemical formula KOH
Molar Mass 56.11 g/mol
HS Code 2815 20 00
Quality Level MQ300


Physicochemical Information
Density 2.04 g/cm3 (20 °C)
Melting Point 360 °C
pH value 14 (56 g/l, H₂O, 20 °C)
Solubility 1130 g/l


Toxicological Information
LD 50 oral LD50 Rat 333 mg/kg


Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Statement(s) H290: May be corrosive to metals.
H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word Danger
RTECS TT2100000
Storage class 8B Non-combustible, corrosive hazardous materials
WGK WGK 1 slightly hazardous to water
Disposal 13
Bases and alcoholates should be diluted if necessary by carefully stirring them into water and then neutralized (protective gloves, fume cupboard!) with hydrochloric acid (Cat. No. 100312). Before placing in container D, check the pH with pH universal indicator strips (Cat. No. 109535).


Safety Information
Hazard Symbols Hazard SymbolsCorrosive
Categories of danger harmful, corrosive
R Phrase R 22-35
Harmful if swallowed.Causes severe burns.
S Phrase S 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).


Storage and Shipping Information
Storage Store at +5°C to +30°C.


Transport Information
Declaration (railroad and road) ADR, RID UN 1813 , 8, II
Declaration (transport by air) IATA-DGR UN 1813 , 8, II
Declaration (transport by sea) IMDG-Code UN 1813 , 8, II, Segregation Group: 18 (Alkalis)


Assay (acidimetric, KOH) ≥ 85.0 %
Carbonate (as K₂CO₃) ≤ 1.0 %
Chloride (Cl) ≤ 0.005 %
Phosphate (PO₄) ≤ 0.0005 %
Silicate (SiO₂) ≤ 0.005 %
Sulfate (SO₄) ≤ 0.0005 %
Total nitrogen (N) ≤ 0.0005 %
Heavy metals (as Pb) ≤ 0.0005 %
Al (Aluminium) ≤ 0.001 %
Ca (Calcium) ≤ 0.001 %
Cu (Copper) ≤ 0.0002 %
Fe (Iron) ≤ 0.0005 %
Na (Sodium) ≤ 0.5 %
Ni (Nickel) ≤ 0.0003 %
Pb (Lead) ≤ 0.0005 %
Zn (Zinc) ≤ 0.0025 %


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