Oxalic Acid (144-62-7)
1. Basic Information
1. Chemical Name: Oxalic Acid
2. Chinese Aliases: 草酸; 乙二酸
3. English Name: Oxalic acid dihydrate
4. Molecular Formula: C₂H₂O₂
5. Molecular Weight: 90.03
6. CAS Number: 6153-56-6; 144-62-7
7. EINECS Number: 612-167-2; 205-634-3
8. Appearance: Colorless transparent crystals or white crystalline powder, easily soluble in water, slightly soluble in alcohol, insoluble in ether.
2. Technical Specifications
Item | Industrial Grade Oxalic Acid
--- | ---
| Type I | Type II
| Premium | First Grade | Qualified | Premium | First Grade | Qualified
Oxalic Acid (as H₂C₂O₄ · 2H₂O) % ≥ | 99.6 | 99.0 | 96.0 | 99.6 | 99.0 | 96.0
Sulfate (as SO₄) % ≤ | 0.07 | 0.10 | 0.20 | 0.10 | 0.20 | 0.40
Ignition Residue % ≤ | 0.01 | 0.08 | 0.20 | 0.03 | 0.08 | 0.15
Heavy Metals (as Pb) % ≤ | 0.0005 | 0.001 | 0.02 | 0.00005 | 0.0002 | 0.0005
Iron (as Fe) % ≤ | 0.0005 | 0.0015 | 0.01 | 0.0005 | 0.0010 | 0.005
Chlorides (as Cl) % ≤ | 0.0005 | 0.002 | 0.01 | 0.002 | 0.004 | 0.01
Calcium (as Ca) % ≤ | 0.0005 | — | — | 0.0005 | 0.0010 | —
Electronic Grade Oxalic Acid Specifications
Oxalic Acid (as H₂C₂O₄ · 2H₂O) %: 99.6
Sulfate (SO₄) ppm: 20
Calcium (Ca) ppm: ≤1
Iron (Fe) ppm: ≤1
Sodium (Na) ppm: ≤1
Potassium (K) ppm: ≤1
Barium (Ba) ppm: ≤1
Aluminum (Al) ppm: ≤1
Magnesium (Mg) ppm: ≤1
Chloride (Cl) ppm: ≤1
Silicon (Si) ppm: ≤1
Strontium (Sr) ppm: ≤1
Lead (Pb) ppm: ≤1
(The above values are reference values; actual numbers are subject to the factory inspection report.)
3. Packaging
The standard packaging is 25kg woven bags lined with plastic film, but custom ton bags or small packages can also be arranged according to customer needs.