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Merck
CN

PX1488

Potassium Hydroxide Solution 45% W/W

TITRISTAR

Synonym(s):

Caustic Potash Solution

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Product Name

Potassium Hydroxide Solution 45% W/W, TITRISTAR

agency

traceable to NIST

vapor pressure

3 hPa ( 20 °C)

form

liquid

pH

>14 (20 °C in H2O)

bp

136 °C/1013 hPa

shipped in

ambient

storage temp.

room temp

Quality Level

Analysis Note

Ammonium hydroxide precipitate: 0.01% max
Assay (acidimetric): 45.0% (w/w) min
Chloride (Cl): 0.005% max
Color (APHA): 20 max
Form: Clear liquid
Heavy metals (as Ag): 5ppm max
Iron (Fe): 5ppm max
Nickel (Ni): 5ppm max
Nitrogen compounds (as N): 5ppm max
Phosphate (PO4): 2.5ppm max
Potassium carbonate (K2CO3): 1.0% max
Sodium (Na): 0.025% max
Sulfate (SO4): 0.0015% max

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

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

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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