Oxalic Acid 99.6% (Refined Industrial Grade)
Free-flowing 99.6% Oxalic Acid Dihydrate crystal for denim potassium permanganate (PP) spray neutralization, iron/rust spot removal on fabrics, and leather bleaching.
Typical Certificate of Analysis (COA) — Oxalic Acid 99.6% (Refined Industrial Grade)
Every container indented by Hafsa Sourcing is accompanied by a batch-specific factory Certificate of Analysis (COA) and optional SGS / Bureau Veritas Pre-Shipment Inspection report verifying the parameters below:
| Test Parameter | Export Spec Limit | Typical Batch Value | Test Method |
|---|---|---|---|
| Oxalic Acid (H2C2O4·2H2O) Purity | ≥ 99.6% | 99.75% | GB/T 1626-2008 |
| Sulphate (as SO4 2-) | ≤ 0.04% | 0.02% | GB/T 1626-2008 |
| Heavy Metals (as Pb) | ≤ 0.001% (10 ppm) | 5 ppm | GB/T 1626-2008 |
| Iron (Fe) Content | ≤ 0.0015% (15 ppm) | 8 ppm | GB/T 1626-2008 |
| Ignition Residue (Ash) | ≤ 0.08% | 0.03% | GB/T 1626-2008 |
Industrial Applications in Bangladesh
Bangladesh Market Context: Widely used in Bangladesh garment washing plants for neutralizing residual manganese dioxide stains after PP spray/sponge treatments on vintage denim, and removing loom rust marks on grey fabric.
- Neutralization and clearing of Potassium Permanganate (PP) vintage wash treatments on denim jeans
- Chelation and removal of stubborn iron/rust stains from cotton and synthetic textiles
- Bleaching and crust color lightening in vegetable and chrome leather tanning
- Marble/granite floor polishing and metal surface cleaning
Import & L/C Indenting Parameters
- Standard Export Packaging
- 25kg PP Woven Bags with Inner PE Liner
- 20ft FCL Container Payload
- 25.0 – 27.0 MT (1,000–1,080 × 25kg Bags per 20ft FCL)
- Chinese Production Hub
- Shandong / Inner Mongolia / Fujian, China
- Bangladesh Customs & Regulatory Note
- Imported under Bangladesh Customs HS Code 2917.11.00; also referenced by anhydrous CAS 144-62-7.
- Trade Synonyms
- Oxalic Acid Dihydrate • Wood Bleach Acid • PP Neutralizer Acid
Other Organic Acids, Chelates & Phosphates Sourced from China
Glacial Acetic Acid 99.85% (GAA)
Methanol-carbonylation virgin Glacial Acetic Acid 99.85% with ultra-low iron (<1 ppm) and zero heavy-metal contamination for dyehouse pH buffering and alkali neutralization.
Formic Acid 85% & 90%
High-strength 85% and 90% Formic Acid from Shandong's premier methyl-formate hydrolysis plants for Savar leather tanning/pickling and high-efficiency textile dye neutralization.
Citric Acid Monohydrate & Anhydrous (99.5%–100.5%)
Tier-1 Shandong fermentation Citric Acid (Monohydrate & Anhydrous) for odor-free, non-yellowing textile finishing pH adjustment, RO membrane cleaning, and green chelation.