Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
It depends a lot on which product needs to be examined.
for Benzene the freezing point is a first line test to know something about the purity,
For some amines it may be the boiling-point ( as seen in GC analysis)
and a nice example of a melting-point as a quality indicator ( as was used in the 80ies ) is that of ε-Caprolactam . which is the basis to make nylon 6,6
In a test tube a few gram of Capro was put in a heated in a heating block till +- 72°C; with a very precise mercury thermometer in it. When it was completely melted we took it in our hands and let it cool down, observing the temp, and let it go down below it’s point of solidification/melting-point, but it stayed liquid = this was the phenomena of ‘under-cooling’.
Then with the thermometer we made a little scratch on the inside and all of a sudden it started to turn solid, forming kind of crystals, what also happened on the same time was the temp from like +- 68,5°c went up to that actual melting- point, and we read that and noted in the books to 2 numbers behind the decimal point !, That few hundreds of a °C made the difference. 69.10 and above was good to very good, for most purposes 69.08 was acceptable but like 69.05 and lower was not high enough, and was immediately reported to the production leader.
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !