Marquis reagent — 4-MEC
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
There are more substances than colors, so to increase analysis precision use a kit with multiple reagents. Exact color of a reaction depends on adulteration, quantity, lighting, temperature, exposure to air, storage, as well as reagent quality and degradation. Positive or negative result does not indicate if a substance is safe. No substance is 100% safe.
4-mec · 4-MEC (4-Methylethcathinone) · 4-Methylethcathinone

No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
Yellow · Orange · Red · Brown · Yellow
4-MEC (4-Methylethcathinone)
Source text (English): short reddish
White · Yellow
4-MEC (4-Methylethcathinone)
Source text (English): light yellow
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
Orange · Blue
4-MEC (4-Methylethcathinone)
Source text (English): Blue
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
White · Purple
4-MEC (4-Methylethcathinone)
Source text (English): light purple (~10 s) > purple with dark purple specks (5 min)
No reaction
4-MEC (4-Methylethcathinone)
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.