Customization: | Available |
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CAS No.: | 67-68-5 |
Formula: | C2h6OS |
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CERTIFICATE OF ANALYSIS |
Product Name | Dimethyl sulfoxide |
Batch Number | 231017ZY |
CAS NO# | 67-68-5 |
Packing | In 200kgs/Drum |
Date Of Manufacture | Oct 06 ,2023 |
Date Of Reported | Oct 06 ,2023 |
Date of Expiry | Oct 05, 2025 |
Items | Specifications | Results |
Appreance | Colorless transparent liquid | Conforms |
Assay Content |
≥99.98% |
99.99% |
Crystallization point ( |
≥18.30°C | >18.30°C |
Acid value (as KOHit) mg/g | ≤ 0.01% | 0.006% |
Transmittance (400nm) | ≥99.0% |
>99.98% |
Water content | ≤0.05% | <0.05% |
Refractive index (20°C) | 1.4778-1.4790 | Conforms |
Reducing substances (as formaldehyde) |
≤0.01% | 0.003% |
Color | ≤ 10 | 5 |
Density (25°C) g/cm3 | ≥1.093 | 1.098 |
PH | 6-8 | 7 |
Na ug/kg | ≤ 10 |
<1 |
Mg ug/kg | ≤ 10 |
<1 |
A1 ug/kg | ≤ 10 |
<1 |
K ug/kg | ≤ 10 |
<1 |
Ca ug/kg | ≤ 10 | <1 |
Cr ug/kg | ≤ 10 |
<1 |
Mn ug/kg | ≤ 10 |
<1 |
Fe ug/kg | ≤ 10 |
<1 |
Ni ug/kg | ≤ 10 |
<1 |
Cu ug/kg | ≤ 10 |
<1 |
Zn ug/kg | ≤ 10 |
<1 |
Pb ug/kg | ≤ 10 | <1 |
Conclusion: The subject material conforms to the required standards. |
Analyst: | Checke: | Authorized Signature & Stamps: |
Examination project |
Enterprise standard |
Appearance |
No colour transparent clear liquid |
Colour (Pt-Co)≤ |
30 |
Density (20ºC, cm³/g) |
0.969±0.0003 |
viscosity,20ºC/mpa.s |
16.1±0.3 |
Acid Value (mgKOH/g) ≤ |
0.1 |
Volatility, 2 hours at 125ºC, %≤ |
0.4 |
Flash point(Cleveland open cup method) ºC |
207 |
Saponification value(KOHmg/g) |
147-155 |
3. Packing
Plastic Drum or iron drum:190kg per drum,with 15.2mt per 20'FCL
Flexitank:20mt per 20'FCL
IBC Drum:900kg per IBC,with 18mt per 20'FCL