Discussion Overview
The discussion centers around the refractive index of methanol (CH3OH) in the infrared range, specifically between 2 to 10 microns. Participants seek data and clarification regarding the frequency dependence of the refractive index for their specific applications.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant requests a refractive index table for methanol in the infrared range of 2-10 microns.
- Another participant suggests that for small concentrations, the refractive index of water could serve as a good approximation.
- A different participant emphasizes the need for data on "pure" methanol.
- One participant cites a value of 1.3288 from the CRC handbook but notes the lack of information on the specific frequency associated with this value.
- Another participant points out that methanol has "fingerprints" in the IR range, indicating that frequency dependence is significant for their needs.
- A participant provides a link to a database for looking up the IR spectrum of methanol.
- One participant mentions that the database only contains transmission spectra up to 2.5 microns, which does not meet their requirements.
Areas of Agreement / Disagreement
Participants express differing views on the adequacy of using water's refractive index as an approximation and the importance of frequency dependence in the refractive index of methanol. The discussion remains unresolved regarding the specific refractive index values in the desired range.
Contextual Notes
There are limitations regarding the availability of data for pure methanol and the specific frequency dependence of its refractive index in the infrared range. The discussion highlights the need for precise measurements that are not fully addressed by existing resources.