LCS Laboratory Inc., offers high a sensitivity measurement of vapor pressure in individual compounds. We test a pressure range from 0.0001 to 1 mm Hg at room temperature. The test is based on the OCDE method 104 – vapor saturation technique.
In this test, dry air is saturated with the sample’s vapor to the point of equilibrium. Once the equilibrium concentration is achieved, the concentration of the sample’s saturated vapor is measured using the standard NIOSH or OSHA procedure for air testing. Concentration of the saturated vapor is recalculated into vapor pressure using a gas equation. This method was validated by the LCS laboratory using n-Hexadecane as a reference material at 21 °C. In this study we achieved a sensitivity of 0.004 Pa. More accurate sensitivity can be achieved for aromatic compounds or chemicals with fluorescent groups.
The laboratory requires about 50 mg of neat material for testing. The qualified material must be relatively stable with a half life in air of 1 week or longer. The client will be asked to provide MW, define appropriate solvent, analytical conditions (GC or HPLC) and disclose the product’s SDS. We do not accept highly toxic or radioactive materials for testing.
To obtain a quote, please email with the following information:
- Number of samples.
- SDS for each sample, or chemical formula, CAS#, and toxicological study.
- What is the material for: pharmaceutical, polymer, pesticide etc.
- Estimated boiling point.
- MW.
- Solvent that can be used for sample dissolution.
- GC or HPLC analytical conditions used in the material preparation and QC study.
- Statement that material is not toxic and not radioactive.
We will reply back with a non – obligatory quote.
For a complete list of all other properties you might need to test for preparation of a MSDS document please visit our Material testing page.
