Potassium hydroxide

Inspection item %
 

Premium Grade(flakes)
 

First Grade(flakes)
 

liquid

KOH
 

≥ 95
 

≥ 90
 

≥48

K 2 CO 3
 

≤ 0.5
 

≤ 0.5
 

≤ 0.055

Chloride (Cl)
 

≤ 0.005
 

≤ 0.005
 

≤ 0.0018

Fe
 

≤ 0.0005
 

≤ 0.0005
 

≤ 0.00032

Sulfate (SO4)
 

≤ 0.005
 

≤ 0.005
 

---

Nitrate (N)
 

≤ 0.0005
 

≤ 0.0005
 

---

Na
 

≤ 0.8
 

≤ 0.8
 

---

Phosphate (PO4)
 

≤ 0.005
 

≤ 0.005
 

---

Silicate (SiO3)
 

≤ 0.01
 

≤ 0.01
 

---

Al
 

≤ 0.002
 

≤ 0.002
 

---

Ca
 

≤ 0.005
 

≤ 0.005
 

---

Ni
 

≤ 0.0005
 

≤ 0.0005
 

---

Heavy metal 

(as Pb)
 

≤ 0.002
 

≤ 0.002

---