148 TESTS FOR METHYL ALCOHOL BY E. W. TODD, B. A. 



Tests were made with methyl alcohol alone, with ethyl 

 alcohol alone and with various mixtures of the two alcohols — ■ 

 the amounts are approximate. 



Some of the tests made are given below, the alcohol being 

 mixed with distilled water in the proportions indicated. The 

 colour, with only small amounts of methyl alcohol in the mixture, 

 develops slowly. 



(1) 2% methyl alcohol. Result: 



in 10 minutes, a distinct, though 

 faint violet colour 

 (on looking down 

 the tube). 



in 20 minutes, the colour very 

 distinct. 



(2) 5% ethyl alcohol. Result: 



in 10m. no trace of colour, 

 in 20m. no trace of colour. 



(3) 5% ethyl alcohol and 2% methyl alcohol. 



Result: 



in 10m. distinct violet colour 



on looking down the 



tube (about the same 



. as in (1) ). 



in 20m. the colour very distinct 



(4) 2§% ethyl alcohol and 1% methyl alcohol. 



Result: 



in 10m. a very faint trace of 

 violet, on looking down 

 the tube, 

 in 15m. slightly more distinct, 



in 25m. quite distinct colour, 



on looking down the 

 tube. 

 The test was then applied to methylated spirits and to 

 rum, as set forth in Table I. 



