Re: TOJC: Experiment 13

Craig Fryhle (fryhle@u.washington.edu)
Fri, 1 Nov 1996 09:48:35 -0800 (PST)

Hi, all. As a point of clarification about the Aldrich Catalog, while
there is much useful information there, it is not a reference source for
physical data on pure compounds. Molecular weights and formulas, yes, but
bp's, mp's, etc., no, because the constants Aldrich lists are for the
specific purity of each product it sells. Purity of each material they
sell (hence bp, mp, etc.) depends on the grade of that product
(analytical, reagent, technical, etc.). The CRC handbook, Merck Index,
and Dictionary of Organic Compounds (in the library and chemistry
conference room) are accepted sources for physical constants.

Still, the Aldrich handbook often can provide a structure for out of the
ordinary compounds, MW, and formula. It's worth a browse now and then.

CBF

On Thu, 31 Oct 1996 casmiedm@PLU.edu wrote:

>
>
> On Wed, 30 Oct 1996 lietkeam@PLU.edu wrote:
>
> > I have a question for everyone who has completed lab already. My
> > sample's boiling point was 89 degrees, but ideally should have been
> > around 100. Have many people gotten something around that temperature?
> > If so, I think I'll redo the lab and be more careful about impurities.
>
> >Ahna,
> The boiling point of t-pentyl chloride, according to the Aldridge
> chemistry book, is 85-86C. The compound was referred to as
> 2-chloro-2-metyl-butane (this is the same compound). Hope you can find
> this boiling point to confirm my determination through this reference
> material.
> Dan Casmier
> casmiedm@plu.edu >
>

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Craig B. Fryhle, Ph.D. Office 206-535-8314 FAX 206-536-5055
Associate Professor Email fryhle@u.washington.edu
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