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    Home > Inorganic Chemistry > Inorganic Bases > Potassium Hydroxide
    Potassium Hydroxide structure

    Potassium Hydroxide

    • CAS No:

      1310-58-3

    • Formula:

      HKO

    • Synonyms:

      Caustic Potash; Potassa

    • China Export:

      From 2018.11 to 2019.11, total export volume of Potassium Hydroxide from China was 49,074,460KG while total export value was $39,261,154. The biggest proportion of exporting volume in the last 12 months was 13.05% in 2018.11.

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    Description

    Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.]

    Basic Attributes

    • 1310-58-3

    • HKO

    • 56.10560

    • 55.96640

    • 23.06000

    • 215-181-3

    • KWYUFKZDYYNOTN-UHFFFAOYSA-M

    • 1

    • 1

    • 0

    Characteristics

    • White flake

    • 1.450 g/mL at 20°C

    • 361 °C(lit.)

    • 1320°C

    • 52 °F

    • n20/D 1.421

    • H2O: soluble

    • Storage Room low temperature ventilation drying ,Separate storage of flammable, combustible, and acids

    • (1317°F): 1 mmHg

    Safety Information

    • II

    • 8

    • 2815200000

    • UN 2924 3/PG 2

    • 1

    • R22; R35

    • S7-S16-S36/37-S45-S36/37/39-S26

    • TT2100000

    • C; F; T; Xi

    • Separated from food and feedstuffs, strong acids and metals. Store only in original container. Dry. Well closed. Store in an area without drain or sewer access.

    • P280-P301 + P312 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338

    • H290-H302-H314

    • Noncombustible Solid; however, may react with H2O & other substances
      and generate sufficient heat to ignite combustible materials.

    Product Usage

    Used in alkalimetric titrations.

    Production Methods

    1. Diaphragm electrolysis of raw materials potassium chloride in the salt bath dissolved into a saturated solution, heated to 9 0 ℃, respectively, by adding potassium carbonate, caustic potash, barium chloride to remove calcium, magnesium and sulfate and other impurities, the settlement residue, hydrochloric acid and refined, containing potassium chloride 280 ~ 31 5 g / L potassium chloride solution was preheated to 70 ~ 7 5 ℃ after the electrolysis, in potassium hydroxide, chlorine and hydrogen. Potassium hydroxide concentration from 10% to 11%, need to be concentrated by evaporation and cooling clarification, obtained with 45% to 50% potassium hydroxide solution; can also continue to concentrate in the pot pot, the decolorization, the system was Solid potassium hydroxide, or by tablets into tablets potassium hydroxide products.
    2. Mercury electrolytic electrolyte preparation with the membrane electrolysis method. Electrolysis chamber to graphite (or metal) as anode, mercury as cathode, electrolysis of chlorine gas to send chlorine gas drying process, the formation of potassium amalgam into the mercury chamber. Most of the unreacted potassium chloride was treated in the state of dilute brine and returned to the raw material dissolution process. Potassium amalgam reacts with water to produce potassium hydroxide and hydrogen. Because of the solution of mercury chamber out of potassium hydroxide concentration of 45% to 50%, can be used as liquid potassium hydroxide products, can also be boiled alkali pot steam concentrated into solid caustic soda or made of potassium hydroxide products.
    3. Preparation of potassium hydroxide is the industrial electrolysis of potassium chloride solution. Because potassium hydroxide than sodium hydroxide difficult to dehydration, the purity of commercially available products can only reach 85% to 86%. Purification may be carried out in the same manner as in the purification of sodium hydroxide.
    4. Potassium chloride by refining, preheating, continuous injection of electrolysis, the electrolysis of liquid generated by the concentration, decolorization derived.
    5. Using ion-exchange membrane method, industrial potassium hydroxide as anode chamber material, pure water as the cathode chamber material, under the action of DC field, K + ions through the selective cation membrane into the cathode chamber and OH- ion generation Reagent potassium hydroxide, concentrated and dried to obtain solid potassium hydroxide. Gas product 2, H2 respectively discharged by the catheter.

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    China Potassium Hydroxide Export Data

    Data referenced from General Administration of Customs,P.R.China

    2018.11-2019.11 China - America  Potassium Hydroxide Export Data

    From 2018.11 to 2019.11, total export volume of Potassium Hydroxide from China to America was 379,003KG while total export value was $386,023. The biggest proportion of exporting volume in the last 12 months was 15.92% in 2019.05.

    2018.11-2019.11 China Potassium Hydroxide Export Data

    From 2018.11 to 2019.11, total export volume of Potassium Hydroxide from China was 49,074,460KG while total export value was $39,261,154. The biggest proportion of exporting volume in the last 12 months was 13.05% in 2018.11.

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