Marquis reagent — 4-FBF
White · Orange
4-FBF
Source text (English): orange
4-Fluorobutyrfentanyl reagent analysis
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-Fluorobutyrfentanyl
4-fluorobutyrfentanyl · 4-FBF · 4F-BF
Mecke reagent — 4-FBF
No reaction
4-FBF
Source text (English): no color change
Mandelin reagent — 4-FBF
Brown · Orange
4-FBF
Source text (English): short brown/orange
Liebermann reagent — 4-FBF
White · Orange
4-FBF
Source text (English): orange
Froehde reagent — 4-FBF
No reaction
4-FBF
Source text (English): no color change
Robadope reagent — 4-FBF
No reaction
4-FBF
Source text (English): no pink color change
Simon's reagent — 4-FBF
No reaction
4-FBF
Source text (English): no blue color change
Ehrlich reagent — 4-FBF
No reaction
4-FBF
Source text (English): no color change
Marquis reagent — 4F-BF
White · Orange
4F-BF
Source text (English): orange
Mecke reagent — 4F-BF
No reaction
4F-BF
Source text (English): no color change
Mandelin reagent — 4F-BF
Yellow · Green
4F-BF
Source text (English): green (long)
Liebermann reagent — 4F-BF
White · Orange
4F-BF
Source text (English): orange
Froehde reagent — 4F-BF
No reaction
4F-BF
Source text (English): no color change
Gallic reagent — 4F-BF
No reaction
4F-BF
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.