COA need meets GB/T1626-2008:
| No. | Items for detecting and analyzing | Standard value |
|---|---|---|
| 1 | Oxalic acid content (C2H2O4)%≥ | 99.6 |
| 2 | Sulfide (as SO4) %≤ | 0.07 |
| 3 | Combustion residue %≤ | 0.01 |
| 4 | Heavy metal (as Pb) %≤ | 0.0005 |
| 5 | Fluoride (as Fe) %≤ | 0.0005 |
| 6 | Chlorine (as Cl) %≤ | 0.0005 |
| 7 | Calcium (as Ca) %≤ | 0.0005 |
| 8 | Water insoluble content %≤ | 0.02 |
References: Riel Chemical Lab1&2, National public service platform for standards information.
Oxalic Acid Dihydrate (Industrial Grade): High-Precision Industrial Application Solutions
Precision Electronic Component Cleaner
In semiconductor and electronics manufacturing, oxalic acid dihydrate precisely removes trace oxides and contaminants from metal surfaces. Suitable for circuit board cleaning and electronic component surface treatment, ensuring high product reliability.
Specialty Fiber Pre-treatment Agent
In high-end textiles and composite materials, oxalic acid dihydrate effectively treats specialty fiber surfaces, enhancing adhesion between fibers and matrix materials to improve overall composite performance and durability.
Industrial Catalyst Support Cleaner
In chemical catalyst production, oxalic acid dihydrate cleans catalyst support surfaces, removing metal impurities and contaminants to restore catalyst activity and extend service life.
We can accept T/T and L/C at sight as payment term.
Of course! We specialized in this line for many years, many customers make a deal with us because we can deliver the goods on time and keep the goods top quality!
Yes, we can provide free sample. You only need to take the express fee.
We always take the customer's benefit as the top priority. Price is negotiable under different conditions, we are assuring you to get the most competitive price.
Sure. You are very welcomed to visit our company in Weifang, China. (We will have someone responsible for picking up and dropping off at Weifang Airport)
We have a professional and perfect after-sales service team, timely for you to deal with all problems.