Transmittance of Cyclohexane for IR Radiation Through Quartz Viewport

AI Thread Summary
The discussion centers on the use of a pyrometer to measure the temperature of a graphite heater operating at up to 1200°C within a chamber filled with liquid cyclohexane, viewed through a quartz viewport. Key concerns include whether cyclohexane will allow infrared (IR) radiation in the 2-4 micron wavelength range to pass through the quartz to the pyrometer. Participants suggest researching the IR transmission properties of cyclohexane and its overlap with the pyrometer's sensitivity range. There is an emphasis on the importance of ensuring the chamber is pressure-proof due to cyclohexane's boiling point of around 80°C, and the discussion includes a mention of a separate condenser for vapor management. Efforts to find relevant IR spectra for cyclohexane in the specified range have been unsuccessful, with participants sharing resources and acknowledging the difficulty in locating data that covers the necessary wavelengths.
Jhon Paul
Messages
6
Reaction score
0
I am interested to use a pyrometer to measure the temperature of a graphite heater while it is being heated (upto 1200 degC). The heater is located inside a small chamber filled with liquid cyclohexane . For viewing purpose of the pyrometer the chamber is having a viewport of Quartz.

The pyrometer can sense wavelength in the range 2 - 4 micron. I am interested to know whether cyclohexane will transmit the IR radiation to pass through the quartz viewport upto the pyrometer. Will appreciate a reply in this regard.
 
Chemistry news on Phys.org
Jhon Paul said:
(upto 1200 degC). The heater is located inside a small chamber filled with liquid cyclohexane

Can't help with IR (I would start finding the expected wavelength and comparing it with the IR spectra for cyclohexane, no idea if the ranges will overlap though) but I hope your chamber is pressure proof, cyclohexane boils around 80°C.
 
Thanks for your reply. The vessel is not closed and the vapours once formed will be condensed using a separate condenser. In fact I was trying to find IR curve for cyclohexane in the range of 30000 to 60000 cm-1 wave number. Unfortunately i could not get one . If you find any IR curve in that range please do communicate.
 
Finding the IR spectra is not that difficult. Problem is, I don't think these cover the IR range OP mentioned, so they are useless here.
 
I agree with you. The IR curve I have obtained none of them spells anything in that region of 2-4 microns.
 

Thread 'Humidity of a saturated NaCl solution with anticaking additive'

I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity? I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by...
View full post »

Thread 'Why does having 8 valence electrons make an element inert?'

I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
View full post »

Thread 'Resists for etching Aluminium with NaOH'

I'm trying to find a cheap DIY method to etch holes of various shapes through 0.3mm Aluminium sheet using 5-10% Sodium Hydroxide. The idea is to apply a resist to the Aluminium then selectively ablate it off using a diode laser cutter and then dissolve away the Aluminium using Sodium Hydroxide. By cheap I mean resists costing say £20 in small quantities. The Internet has suggested various resists to try including... Enamel paint (only survived seconds in the NaOH!) Acrylic paint (only...
View full post »

Similar threads

IR transmission through a very thin liquid-filled cell
Replies
11
Views
2K
Trying to understand what happens when EMR goes through matter (or doesn't)
Replies
6
Views
5K
Is my fictional Solar System stable and realistic?
Replies
21
Views
4K
How Does Solid Hydrogen Influence Astrophysics?
Replies
2
Views
5K

Hot Threads

Recent Insights

Back
Top