Description
Potassium hydroxide, 5K
pellets for analysis EMSURE®
Synonym(s):
Potash caustic, Caustic potash
Linear Formula:
KOH
CAS Number:
1310-58-3
Molecular Weight:
56.11
MDL number:
MFCD00003553
EC Index Number:
215-181-3
PROPERTIES
vapor pressure
1 mmHg ( 719 °C)
Quality Level
300
product line
EMSURE®
Assay
≥85.0% KOH basis (acidimetric)
form
solid
potency
333 mg/kg LD50, oral (Rat)
pH
14 (20 °C, 56 g/L in H2O)
mp
361 °C (lit.)
solubility
1130 g/L
anion traces
carbonate (K2CO3): ≤1.0%
chloride (Cl-): ≤0.005%
phosphate (PO43-): ≤0.0005%
silicate (as SiO2): ≤0.005%
sulfate (SO42-): ≤0.0005%
cation traces
Al: ≤0.001%
Ca: ≤0.001%
Cu: ≤0.0002%
Fe: ≤0.0005%
N: ≤0.0005%
Na: ≤0.5%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.0025%
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
Analysis Note
Assay (acidimetric, KOH): ≥ 85.0 %
Carbonate (as Kâ‚‚CO₃): ≤ 1.0 %
Chloride (Cl): ≤ 0.005 %
Phosphate (POâ‚„): ≤ 0.0005 %
Silicate (SiOâ‚‚): ≤ 0.005 %
Sulfate (SOâ‚„): ≤ 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): ≤ 0.0005 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0025 %
Carbonate (as Kâ‚‚CO₃): ≤ 1.0 %
Chloride (Cl): ≤ 0.005 %
Phosphate (POâ‚„): ≤ 0.0005 %
Silicate (SiOâ‚‚): ≤ 0.005 %
Sulfate (SOâ‚„): ≤ 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): ≤ 0.0005 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0025 %
Legal Information
EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany
SAFETY INFORMATION
Pictograms
GHS05,GHS07
Signal Word
Danger
Hazard Statements
H290 - H302 - H314
Precautionary Statements
P234 - P260 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
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