[shelley]

Hi,

Can you direct me to a reliable website where I can input a compound name (s) or (l) i.e. Sulfuric acid, conc. 18 M   H2SO4 liquid
 
and the boiling point of the i.e. sulfuric acid reagent is a liquid at room temperature would be provided to me?

Also, can you provide me the website where I can find the chemical's MSDS?  Thank you.

[discodermolide]

Why not Google it yourself?
It's what I would do.

[AC Prabakar]

Why not Google it yourself?
It's what I would do.

Yes it is an ideal option for start.
If you are looking for a specific/speciality chemicals you can check it for supplier's site, for eg. SigmaAldrich,Lancaster etc. The same is applicable for MSDS also. I used to practice the same.If possible Check the below link:-http://www.sciencelab.com/msdsList.php

[Arkcon]

Wikipedia has MP, BP, formula mass, and other data for most chemicals that are well known.  I know people react badly to Wikipedia, but ACS has gone on notice, they are monitoring edits to chemical pages, and will revert bogus stats.  Another source is Goggle for the MSDS.  The MSDS is produced by the manufacturer or retailer of the chemical, for safety purposes of the person who purchased it.  So this data is likewise completely trustworthy.  If you want, you can go and look up the MSDS in a binder close to the laboratory that has the chemical, where it should be available before you start to use the chemical.  There are also common reference books available in every university library -- either the CRC or The Concise Chemical Dictionary.

[curiouscat]

Nist web-book is another great option.

[Enthalpy]

Google yes, but it wastes much time... Within the Internet, you may refine your search by looking only at Sigma-Aldrich's or Merck's websites, in a first attempt.

Excellent : Merck had its whole product line on a Cdrom, then you get physical information and Msds for each product they sell. Doesn't exist any more in 2012, but the latest edition (500MB?) is available in peer-to-peer, and since Merck gave the Cd for free when it existed, I suppose they won't complain if you download the older edition and install it on your disk. Much faster than the Internet.

[Enthalpy]

One other option is to buy a handbook, for instance the CRC Handbook of Chemistry and Physics. You get new outdated ones for reasonable money on eBay or Amazon, used ones for less. At least this one has measured temperatures.

Be very careful that most mp and bp on the Web are not measured but software-estimated! Bp can be accurate to 10K but mp tend to be extremely false, like 100K off!

Complete books (even very well-known) have been filled with such software estimations and have cr*p value. If, for instance, you get temperatures with 0.01K precision forget it. Or if several similar molecules in a list have the same mp, it's just because the rules of the software don't make the difference. Throw away.

If you find a book from before 1980 it's likely to have measured temperatures. You'll be astonished to see how few authors measured melting points...