Liebermann reagent — 1,4-Butanediol
White · Purple · Blue
1,4-Butanediol (BDO)
Source text (English): purple-blue
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.
White · Purple · Blue
1,4-Butanediol (BDO)
Source text (English): purple-blue
White · Red · Purple
25T-NBOMe
Source text (English): violet
White · Orange · Purple · Red
2C-T-2 (Rosy)
Source text (English): red or purple
White · Purple
2C-T-2-NBOMe
Source text (English): reddish purple
White · Red · Purple · Black
2C-T-4
Source text (English): dark red > dark violet > black
White · Purple
2C-T-7 (Beautiful, Blue Mystic, 7th Heaven)
Source text (English): deep purple
White · Orange · Purple · Black
6-APDB (4-desoxy-mda)
Source text (English): black
White · Red · Purple
Diclofenac
Source text (English): dark red/ purple
White · Brown · Purple
Etodesnitazene (Etazene)
Source text (English): dark brown / purple
White · Brown · Purple
Etonitazepyne
Source text (English): dark brown / purple
White · Purple
Metonitazene
Source text (English): reddish purple
White · Brown · Purple
Paracetamol (Acetaminophen)
Source text (English): brownish purple
White · Purple · Brown · Black
PMA
Source text (English): purple > black
White · Purple · Brown · Black
PMEA
Source text (English): purple > black
White · Purple · Brown · Black
PMMA
Source text (English): purple > black
White · Purple
Sugar
Source text (English): very light purple
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.