4-FEA 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-FEA

4-fea · 4-Fluoroethamphetamine (4-FEA) · 4-Fluoroethamphetamine

Reagent colour reaction chart for 4-FEA — Documented reagent colour reactions for 4-FEA.

Marquis reagent — 4-FEA

White · Orange · Brown

4-Fluoroethamphetamine (4-FEA)

Source text (English): light brown

Mecke reagent — 4-FEA

White · Brown

4-Fluoroethamphetamine (4-FEA)

Source text (English): light brown / brown

Mandelin reagent — 4-FEA

Yellow · Brown

4-Fluoroethamphetamine (4-FEA)

Source text (English): brown

Liebermann reagent — 4-FEA

White · Brown

4-Fluoroethamphetamine (4-FEA)

Source text (English): instant deep brown

Froehde reagent — 4-FEA

White · Brown

4-Fluoroethamphetamine (4-FEA)

Source text (English): light brown

Simon's reagent — 4-FEA

Orange · Blue

4-Fluoroethamphetamine (4-FEA)

Source text (English): slow blue

Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.