Thanks for your question.
The CAS# for trinitrobenzoic acid (TNBA) is 129-66-8. The UN/NA ID#
is UN1355. The compound is not widely available, in part because it
is considered an explosive (a breakdown product of TNT, actually).
For transportation purposes, it is considered a Class A Explosive
(same class as TNT), so few companies are willing to ship it and
obtaining supplies of it quickly is difficult, unless it is
synthesized on site.
A good, general resource for finding chemicals is the BuyersGuideChem:
Searching this database (both the US and German versions) generates
only 4 sources. Here is a link to the list of sources:
These are the sources in the above list, with links and e-mail
addresses for the two companies who actually produce the substance,
and would be the best sources to contact for larger quantities.
Chemos GmbH (Germany)
Unfortunately, a search of the company's online catalog turned up
nothing, so I believe they have stopped supplying this chemical.
D-93128 Regenstauf, Germany
Phone +49-9402-9336 0
Fax +49-9402-933 613
Email firstname.lastname@example.org Message Box
Dayang Chemicals Co. Ltd., Export Dept. (P.R.China)
A/5F 1539 Fuli Building, 328# WenEr Rd.
Hangzhou City 310012, P.R.China
Phone +86-571-8893-8657/ 8893-8651
Sales contact Export department
NSTU Chemicals Hangzhou Co. (P.R.China), producer
10-75 , Guashan South Garden
Gongshou District, Hangzhou City, 310015, P.R.China
Phone +86-571-8801 0713
Fax +86-571-8801 0679
SYNCHEM OHG (Germany), producer
The price from SynChem is 800 Euros for 5 grams, Order #jg009 . Of
the above sources, SynChem is the best bet.
Here is their contact info:
SYNCHEM Laborgemeinschaft OHG
D-34109 Kassel, Germany
Dr. Jaeger or Dr. Drinkuth
Telefon: +49 (0) 561 8044642
Telefax: +49 (0) 561 8044648
Searching the ChemFinder database indicated that there are currently
no US suppliers of this compound.
The ChemExper database turned up Matrix Switzerland, who can provide
the chemical in bulk or semi-bulk. Here is their contact information:
MATRIX MARKETING GMBH
Bahnweg Nord 35 CH-9475 Sevelen Switzerland
+41 (0)81 740 58 30
+41 (0)81 740 58 31
Their website is not very useful, however, and I suspect they are
merely a reseller for other chemical suppliers.
The ChemIndex database dredged up another source, in China, in
addition to the above:
Dayang Chemicals Co. Ltd.
33-1-201 Fuyuanxincun Tianmushan Road Xihu District Hangzhou City, China(310012)
Their website is "under construction," making this company less useful
Given the limited number of suppliers available and the high cost of
both the compound and its transportation, another consideration would
be synthesis on-site.
Trinitrobenzoic acid can be synthesized from less expensive reagents
(essentially oxidation of trinitrotoluene - TNT). Here is a page
describing the synthesis from sulfuric acid, sodium dichromate,
trinitrotoluene, sodium hydroxide, and water:
This is obviously a dangerous process, only to be carried out by
individuals with the proper training handling explosives.
Here is another synthesis description:
Also of potential interest, here is the National Institute of
Standards page on this compound, which gives some other names by which
it may be known:
The NIH National Library of Medicine page for the compound is here:
Here is the Canadian Centre for Occupational Health and Safety page:
I hope this was useful. Please do not hesitate to request any clarification.
Clarification of Answer by
26 Apr 2005 17:48 PDT
Thank you for the high rating!
I at last heard from SynChem. They supply the acid, the salt, and the
wetted form of the acid. Here is their price quote, as well as some
additional information on the sodium salt:
We thank you for your enquiry dated April 24, 2005 and are pleased to
quote as follows:
2,4,6-Trinitrobenzoic acid free acid JG009
1 g: 300 EUR + freight & insurance [error? should be 300mg -welte-ga]
1 g: 800 EUR + freight & insurance
Delivery time: prompt, on stock
Payment terms: 20 days net cash
This offer is without obligation.
The CAS# of the sodium salt is 63467-66-3. You can easily transfer the
free acid to the sodium salt.