Caustic Potash
ChemAce Chemical Supply
, a division of Nikkin Flux Corp., Pontoon Beach, IL 62040
Potassium hydroxide
IUPAC name
Potassium hydroxide
Other names
Caustic potash
Potash lye
Potassia
Potassium hydrate
Identifiers
CAS number
1310-58-3
Y
PubChem
6093213
ChemSpider
14113
EC number
215-181-3
UN number
1813
RTECS number
TT2100000
Properties
Molecular formula
KOH
Molar mass
56.1056 g/mol
Appearance
white solid,
deliquescent
Density
2.044 g/cm
3
Melting point
420 °C
Boiling point
1327 °C
Solubility
in
water
110 g/100 mL (25 °C)
178 g/100 mL (100 °C)
Solubility
soluble in
alcohol
,
glycerol
insoluble in
ether
, liquid
ammonia
Acidity
(p
K
a
)
13.5 (0.1 M)
Refractive index
(
n
D
)
1.409
Structure
Crystal structure
monoclinic
Coordination
geometry
rhombohedral
Hazards
MSDS
ICSC 0357
EU Index
019-002-00-8
EU classification
Corrosive (
C
)
Harmful (
Xn
)
R-phrases
R22
,
R35
S-phrases
(S1/2)
,
S26
,
S36/37/39
,
S45
NFPA 704
0
3
1
Flash point
Non-flammable
LD
50
273 mg/kg
Related compounds
Other
anions
Potassium hydrosulfide
Potassium amide
Other
cations
Lithium hydroxide
Sodium hydroxide
Rubidium hydroxide
Caesium hydroxide
Related compounds
Potassium oxide
Y
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Except where noted otherwise, data are given for materials in their
standard state (at 25 °C, 100 kPa)
Infobox references
* Source: Wikipedia
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