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Ruichi chemical

Potassium hydroxide

Chemical formula

KOH

CAS No.

1310-58-3

Executive standard

Industrial liquid potassium hydroxide HG/T3815-2013, GB/T1919-2014
Industrial flake potassium hydroxide HG/T3688-2010, GB/T1919-2014
Food additive potassium hydroxide GB25575-2010

Product Usage

(1) Mainly used as raw materials for the production of potassium salts, such as potassium permanganate and potassium carbonate.
(2) In the pharmaceutical industry, it is used to produce potassium borohydride, spironolactone, salanol, progesterone and testosterone propionate.
(3) In the light industry, it is used to produce potassium soap, alkaline storage batteries, and cosmetics (such as cold cream, vanishing cream and shampoo).
(4) In the dye industry, it is used to produce vat dyes, such as vat blue RSN.
(5) In the electrochemical industry, it is used for electroplating, engraving, etc.
(6) In the textile industry, it is used for printing and dyeing, bleaching and mercerizing, and used as the main raw material for man-made fibers and polyester fibers.
(7) In addition, it is also used in metallurgical heating agents and leather degreasing.

Index

①Indices of industrial grade liquid potassium hydroxide:

Project	Index
Total alkalinity (KOH)，w/% ≥	48.0
CI，w/% ≤	0.002
Fe，w/% ≤	0.0002
Na，w/% ≤	0.4
AI，w/% ≤	0.0005
KC₁O₃，w/% ≤	0.005
Heavy metal，w/% ≤	0.001

②Indices of industrial grade flake potassium hydroxide:

Project	Index
	Ⅰ		Ⅱ
	Premium	First grade	Premium	First grade
KOH w/% ≥	95.0	95.0	90.0	90.0
K₂CO₃ w/% ≤	0.5	0.5	0.5	0.5
CI w/% ≤	0.005	0.01	0.005	0.01
SO₄ w/% ≤	0.002	0.005	0.002	0.005
Nitrate and nitrite w/% ≤	0.0005	0.0005	0.0005	0.0005
PO₄ w/% ≤	0.002	0.005	0.002	0.005
SiO₃ w/% ≤	0.01	0.01	0.01	0.01
Fe w/% ≤	0.0002	0.0005	0.0002	0.0005
Na w/% ≤	0.5	1.0	0.5	1.0
AI w/% ≤	0.001	0.002	0.001	0.002
Ca w/% ≤	0.002	0.005	0.002	0.005
Ni w/% ≤	0.0005	0.001	0.0005	0.001
Heavy metal w/% ≤	0.001	0.002	0.001	0.002

③Indices of food additive potassium hydroxide:

Project	Index
Project	Solid	liquid
Color and smell	White or almost white, odorless	Colorless and odorless
Organization status	Granular, flake, rod or molten solid	Clear or slightly cloudy liquid
KOH）.w/%	85.0~100.5	≥45.0
K₂CO₃）.w/% ≤	2.0	2.0
Hg）/(mg/kg) ≤	0.1	0.1
As）/(mg/kg) ≤	3	3
Heavy metal/(mg/kg) ≤	10	10（
Lead a(Pb)/(mg/kg) ≤	5	5
Clarity	Pass the test	Pass the test

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