Refractive index of Vanillin and p-bromobenzophenone

AI Thread Summary
The discussion centers on finding the refractive index for vanillin and p-bromobenzophenone as part of an organic chemistry assignment. The refractive index for vanillin is noted as 1.555, but the user is unsure of the temperature at which this value is measured, suspecting it may vary. Suggestions include consulting the CRC Handbook for chemical properties, although the user reports difficulty finding relevant information, specifically for p-bromobenzophenone. Another participant suggests that the refractive index can likely be assumed at 25°C, which is a common standard temperature for such measurements. The conversation highlights the challenges of sourcing specific chemical data in textbooks and online resources.
shad0w0f3vil
Messages
70
Reaction score
0
Hi,

I have an organic chemistry assignment identifying an unknown sample. My tutor has asked for the properties (I can find all but refractive index) for vanillin and p-bromobenzophenone.

I found that for Vanillin it is 1.555 but I know that it changes with temperature and I cannot find a temperature for this reading.

I was just wondering if anyone knows a good website or has a good chemistry textbook lying around with this information (I couldn't find it in the VOGEL text...)

Kind regards,
 
Chemistry news on Phys.org
shad0w0f3vil said:
Hi,

I have an organic chemistry assignment identifying an unknown sample. My tutor has asked for the properties (I can find all but refractive index) for vanillin and p-bromobenzophenone.

I found that for Vanillin it is 1.555 but I know that it changes with temperature and I cannot find a temperature for this reading.

I was just wondering if anyone knows a good website or has a good chemistry textbook lying around with this information (I couldn't find it in the VOGEL text...)

Kind regards,

Try the CRC Handbook
 
gabriels-horn said:
Try the CRC Handbook

I downloaded the handbook and only found dibromobenzophenone.

Any other ideas please?
 
shad0w0f3vil said:
I downloaded the handbook and only found dibromobenzophenone.

Any other ideas please?

Where do you download the CRC handbook?
 
I found that for Vanillin it is 1.555 but I know that it changes with temperature and I cannot find a temperature for this reading.

Probably safe to assume 25C.
 
It seems like a simple enough question: what is the solubility of epsom salt in water at 20°C? A graph or table showing how it varies with temperature would be a bonus. But upon searching the internet I have been unable to determine this with confidence. Wikipedia gives the value of 113g/100ml. But other sources disagree and I can't find a definitive source for the information. I even asked chatgpt but it couldn't be sure either. I thought, naively, that this would be easy to look up without...
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!!
Back
Top