Ideal for the Electronic Industry
DMSO Electronic Grade is Dimethyl Sulfoxide with extremely low metallic ion levels. Elimination of metallic impurities is critical in avoidance of conductivity and corrosion in the electronic industry. Residual levels of eleven metals are analyzed our analysis includes confirmation of ion content in Parts per Billion (ppb) by ICP-OES ( Inductively Coupled Plasma-Optical Emission Spectroscopy). DMSO Electronic Grade is produced and packaged under exacting conditions to insure purity.
Choose DMSO Electronic Grade for:
TFT-LCL Manufacturing
In the photolithographic process used to pattern thin film transistors, DMSO is combined with ethanolamine and used as a powerful remover of bulk photoresist. Pure DMSO is also used in many Fab shops as a rinse solvent, a thinner (for edge cleaning), and in the rework of color filters. The only DMSO manufactured under cGMP conditions conforming to API guidelines Manufactured in dedicated, stainless steel equipment utilizing patented technology to ensure the highest purity Supported by a Type II Drug Master File (DMF) on file with the FDA and Health Canada.
Semiconductor devices
DMSO is used as a major component in bulk photoresist stripping formulations, and as an additive in specialized post- etch cleaning products and edge bead removers.
Solder Bump Patterning
As an alternative to wire bonding, a final wafer processing step produces solder bumps on the surface of a chip pad. DMSO is a useful component of stripping formulations needed to remove the photoresist which patterns the solder bumps in Flip Chip packaging technology.
Representative Specification
| Representative Test Methods | Values |
|
Assay by GLC, % Minimum |
99.9 |
|
Water, % by KF, Maximum |
0.05 |
|
Titrable Acid, meq / g, Maximum |
0.001 |
|
Color APHA, Maximum |
10 |
|
Specific Gravity, g/ml minimum |
1.09 |
|
Residue, % maximum |
0.01 |
| Metals, ppb maximum by ICP-OES | |
|
Aluminum |
10 |
|
Calcium |
10 |
|
Chromium |
10 |
|
Copper |
10 |
|
Gold |
10 |
|
Iron |
10 |
|
Nickel |
10 |
|
Potassium |
10 |
|
Silica |
10 |
|
Sodium |
10 |
|
Zinc |
10 |
This illustration does not constitute the specification. Specifications are available upon request.
DMSO EL Grade at a Glance
|
Physical Properties Data |
|
|
Specific Gravity d 20/4 |
1.104 |
|
Boiling Point (atmos. pressure) |
189°F |
|
Viscosity at 20°C |
2.14 cP |
|
Refractive Index n 20/D (20°,68°F) |
1.4785 |
|
Surface Tension at (20°C, 68°F) |
43 dynes / cm |
|
Specific Heat at 25°C (77°F) |
0.45 cal / g/ °C |
|
Heat of Vaporization (25°C) |
162 cal / g |
|
Electrical Conductivity at (20°C) |
3 x 10 -8 /ohm / cm |
|
Dielectric Constant at 20°C |
48 |
|
Dipole Moment |
4.3D |
|
Vapor Pressure at 25°C (77°F) |
0.6 mm Hg |
Solubility
Soluble in water, light alcohols and diethyl either.
Regulatory
CAS: 67-68-5
EINECS: 200-664-3
HMIS and NFPA Hazard Ratings: Health – 1, Flammability – 1, Chemical Reactivity – 0
Packaging
Drums : 500 pound HDPE
Bulk : ISO Container and Tank Truck
The information in this bulletin is based on information available to us and on our observations and experiences. However, no warranty is expressed or implied regarding the accuracy of this data, the results to be obtained from the use thereof, or that any use will not infringe any patent. Each user must establish appropriate procedures for off-loading, handling, and use of the product(s). Since conditions for use are beyond our control, we will make no guarantee of results, and assume no liability for damages incurred by off-loading, handling, or use of the product(s). Nothing herein constitutes permission, or recommendation to practice any invention covered by any patent without license from the owner of the patent.