While searching chemical catalog for paraffin wax (for histology), I have seen that, "paraffin wax (non caking)". I searched many books and browsed enough to understand the meaning for the word "Non caking". However, I didn't understand the meaning for that word.
If anyone knows, please convey.
Thanking you in advance for your reply.
Dear Annadurai Shanmuganathan
I imagine that this refers to the fact that this paraffin wax stays quite soft, it does not harden when at room temperature. This is good for sectioning. The important point when choosing a paraffin wax is the melting temperature. Relatively low melting temperatures (about 56 degrees C) ensure that at room temp the paraffin is not very hard. In addition, it ensures you can embed the tissue at relatively low temperatures, thus avoiding hardening of the tissue.
Good luck
Fernando
Dear Annadurai Shanmuganathan
I imagine that this refers to the fact that this paraffin wax stays quite soft, it does not harden when at room temperature. This is good for sectioning. The important point when choosing a paraffin wax is the melting temperature. Relatively low melting temperatures (about 56 degrees C) ensure that at room temp the paraffin is not very hard. In addition, it ensures you can embed the tissue at relatively low temperatures, thus avoiding hardening of the tissue.
Good luck
Fernando
cakes have air bubbles and a crust.
can also mean it forms lumps and drys out
can also say "i'm caked in mud"
old blocks can dry out and become brittle to cut
am fully agreed with the answer given by Fernando Martinez-Garcia because it is very important that the softness of the wax. this is also important for the cutting the blocks and for better sectioning too.
good luck
ANIL
The paraffin wax fulled better than the other materials for fill in the empty space created of alcohol and xylene. Also for cutting the blocks is good and softness.
good luck
Ehsan salimi
Baking and Caking are not synonymous, I do not believe this is a reference to the melting point of the wax, more its consistency. Wax is aliphatic hydrocarbon chains of varying length. Larger and branch chains will be of less use and often clump together.
Caking can mean lumping/bubbling and the resulting lack of homogeneity. The analogies to thermal dynamics i'm aware of would be thermal expansion of trapped gases and the Mailard reaction (browning of crust due to carb-amine reactions)
Could they have just sieved the larger chains out to create a more homogeneous mix of short chain (which will also lower the melting point of the mixture)?
Jason
Anti-caking agents are added to salt and other ingredients so that it pours easily and does not clump in the container. I assume that this is the same adjective applied to paraffin wax. Remains homogeneous and pours easily.
If the paraffin wax is in powder an anti-caking agent like polyethylen wax added could be used in order to increase its melting point.
This indicates that the paraffin is an anti-caking agent when it is added for fertilizers stored in varc
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