Ask Erowid

Ask a Question

Find an answer:

View By Category

Search Ask Erowid
Search Vaults

Enter a keyword in the search field above to look up a question or answer on a specific topic.

Off-Site Psychoactive Question Resources
  Ask Dr Shulgin

Resources at Erowid
  Plants & Drugs
  Freedom & Law
  Mind & Spirit
  Arts & Sciences
  Library / Bookstore
  What's New
  About Erowid
Can hydrochloric acid be used to make Marquis reagent?
Q: Can hydrochloric acid can be substituted for sulfuric acid in the Marquis reagent? If so, what color would MDMA change this reagent?

A: In short, the answer is no. There is very little or no information online about HCl-substituted Marquis reagent, so we prepared some ourselves and compared the results using known compounds to results with standard Marquis reagent made with sulfuric acid. The compounds selected were papaverine, codeine, methamphetamine, and the non-steroidal anti-inflammatory drug indomethacin. In all cases no color change was produced. Itís possible that HCl-substituted Marquis might react with some other compounds, but given the chemical variety of the test compounds we used, the likelihood seems very low.

Asked By : BC
Answered By : Blacklight
Edited By : earth, jon
Published Date : 1 / 8 / 2011
Last Edited Date : 1 / 12 / 2011
Question ID : 3150

Categories: [ Test Kits ] [ Chemical ID ] [ MDMA (Ecstasy) ]

Ask Erowid v1.7 - Jul, 2005

(content and html © the Vaults of Erowid. Please ask permission before publicly reproducing.)