Camphene looks liquid and solid seperated

[shihanpk]

Hello guys
I had bought some camphene
When I recieved its looks like water like substance bloating upper side and solid settled down lower side
I have uploaded pictures below
Why is like that? Is that because water mixed with camphene? Because i saw camphene is in crystalline form

 

[David Ruskin]

Camphene is not soluble in water. Camphene has a melting point of 52 deg C. Camphene is a white, crystalline solid below 52 deg. C. God knows what you have received, and from whom.

 

[mnitabach]

If you heat this in the bain marie to 80C, does the solid melt & the material forms a homogeneous transparent liquid?

 

[parker25mv]

It is possible the camphene could be in very poor condition and may have partially polymerized.
(This probably means it is very old and was stored under improper conditions)

Another possibility is that the perfume supplier might have ignorantly tried to dissolved the camphene in alcohol. Camphene is only partially soluble in alcohol, and can sometimes lead to a milky looking suspension. If this is the case, it should be perfectly fine.

 

[shihanpk]

It is possible the camphene could be in very poor condition and may have partially polymerized.
(This probably means it is very old and was stored under improper conditions)

Another possibility is that the perfume supplier might have ignorantly tried to dissolved the camphene in alcohol. Camphene is only partially soluble in alcohol, and can sometimes lead to a milky looking suspension. If this is the case, it should be perfectly fine.

I seperated liquid and solid and kept liquid in fridge for 5 minuite and it become solid like jelly

 

[clandestine laboratories]

This is actually fairly normal for camphene and does not suggest a problem. I'm guessing it's fairly warm where you are.

 

[mnitabach]

I seperated liquid and solid and kept liquid in fridge for 5 minuite and it become solid like jelly

If you warm the entire container to 80C, does the solid phase melt & combine homogenously with the liquid to form a single phase?

 

[shihanpk]

If you warm the entire container to 80C, does the solid phase melt & combine homogenously with the liquid to form a single phase?

Let me check
Will update you

 

[mnitabach]

This is actually fairly normal for camphene and does not suggest a problem. I'm guessing it's fairly warm where you are.

This is what I was thinking, by analogy to cedrenol, which is liquid + solid at room temp.

 

[clandestine laboratories]

This is what I was thinking, by analogy to cedrenol, which is liquid + solid at room temp.

Good comparison. I'm not sure why one chem would be partially liquid, but it happens. Even more strangely, I've seen a couple aromachems that are solid from one supplier, liquid from another. I suspect this is due the small amounts of impurities affecting the melting point or interfering with crystallization. Possibly with these partially liquid materials, they form pure crystals, which causes the impurities to become more concentrated in the liquid part, preventing further crystalization.

 

[David Ruskin]

There is the phenomenon of a solid which remains liquid below its freezing point. Diphenyl oxide can show this. If it is carefully warmed until liquid then kept still it will often remain liquid at a temperature when when it should be solid. However, any movement, or addition of a small amount of solid DPO will cause the entire container to solidify. I think it is being suggested that cedrenol and camphene are showing this. Maybe, but it is unusual for liquid and solid to be present together.

 

[mnitabach]

There is the phenomenon of a solid which remains liquid below its freezing point. Diphenyl oxide can show this. If it is carefully warmed until liquid then kept still it will often remain liquid at a temperature when when it should be solid. However, any movement, or addition of a small amount of solid DPO will cause the entire container to solidify. I think it is being suggested that cedrenol and camphene are showing this. Maybe, but it is unusual for liquid and solid to be present together.

Actually, I don't think this hysteresis (seen w stuff like methyl anthranilate & alpha-hexyl cinnamaldehyde & nerolione) is the scenario with cedrenol. The two phases of cedrenol remain in stable equilibrium at room temperature. Rather, I think with cedrenol is that it isn't really a single molecular species, but contains multiple isomers & "impurities". AFAIK, cedrenol is derived from cedarwood & is a chemically modified natural extract. Perhaps this is also the case with camphene?