Why does my THC extract keep turning out black? : DankNation | Torhoo darknet markets
Does anyone know why my shatter (ethanol extraction) always turn out black? I always thought it was because the ethanol also extracted the chlorophyll, but exposing the filtered ethanol to sunlight for an hour is supposed to kill it. Obviously I've been doing this, but the final product still comes out black. Any help fixing this would be greatly appreciated. Thanks.
If your THC extract keeps turning out black, it's usually a sign that something is going wrong during the extraction or purging process. Here are the most common reasons and how to fix them:
🔥 1. Too Much Heat
Problem: Overheating during extraction or purging can cause cannabinoids and terpenes to degrade, resulting in a dark or black color.
Fix: Keep temperatures lower — ideally below 90°C (194°F) for solvent purging. For rosin pressing, aim for 160–200°F (71–93°C) depending on material.
🧪 2. Low-Quality or Old Starting Material
Problem: Using trim, old buds, or degraded biomass can introduce chlorophyll, oxidized compounds, and plant waxes that darken the extract.
Fix: Use fresh, high-quality flower or sugar leaf. Older or poorly stored material is more likely to oxidize and darken during extraction.
💧 3. Moisture in the Material
Problem: Water in the plant material causes emulsification or steam during extraction, leading to darker, harsher extracts.
Fix: Always dry and properly cure your material before extraction. Aim for less than 10% moisture.
🧼 4. Not Removing Plant Lipids, Waxes, or Chlorophyll
Problem: Chlorophyll and plant waxes darken the oil and affect taste.
Fix (depending on method):
Solvent extractions (e.g., ethanol): Winterize the extract (freeze + filter to remove waxes).
Rosin pressing: Pre-press and use filter bags (e.g., 37–90 micron for flower).
⏱️ 5. Long Soak Times (for solvent-based extraction)
Problem: Longer exposure to solvent pulls out more impurities like chlorophyll and tannins.
Fix: Shorten soak time — aim for 20–60 seconds if you're using cold ethanol or ISO.
❄️ 6. No Cold Control
Problem: Warm extraction temperatures pull more unwanted dark compounds.
Fix: Use cold ethanol or butane (e.g., –40°C) to reduce chlorophyll and wax solubility.
🧯 7. Oxidation
Problem: Exposure to air/light/heat causes cannabinoids and terpenes to oxidize, turning extract dark.
Fix: Work in low-light conditions, store in airtight containers, purge under vacuum, and keep cool.
🎯 BONUS TIPS (Depending on Extraction Method)
Method Best Practices
Rosin Low-temp press, use quality flower, dry material, use filter bags
Ethanol Cryo temps (–40°C), short soak, winterize and purge properly
BHO Closed-loop system, cold temps, proper vacuum purge
ISO Very short washes, use cold solvent, avoid heat after wash
sunlight aint gonna fix it lol, you need as cold as possible anhydrous ethanol and to wash for very short amount of time to get something light-colored. its pretty wasteful IME, unless you're cooking with the bud after washing.
🔥 1. Too Much Heat
Problem: Overheating during extraction or purging can cause cannabinoids and terpenes to degrade, resulting in a dark or black color.
Fix: Keep temperatures lower — ideally below 90°C (194°F) for solvent purging. For rosin pressing, aim for 160–200°F (71–93°C) depending on material.
🧪 2. Low-Quality or Old Starting Material
Problem: Using trim, old buds, or degraded biomass can introduce chlorophyll, oxidized compounds, and plant waxes that darken the extract.
Fix: Use fresh, high-quality flower or sugar leaf. Older or poorly stored material is more likely to oxidize and darken during extraction.
💧 3. Moisture in the Material
Problem: Water in the plant material causes emulsification or steam during extraction, leading to darker, harsher extracts.
Fix: Always dry and properly cure your material before extraction. Aim for less than 10% moisture.
🧼 4. Not Removing Plant Lipids, Waxes, or Chlorophyll
Problem: Chlorophyll and plant waxes darken the oil and affect taste.
Fix (depending on method):
Solvent extractions (e.g., ethanol): Winterize the extract (freeze + filter to remove waxes).
Rosin pressing: Pre-press and use filter bags (e.g., 37–90 micron for flower).
⏱️ 5. Long Soak Times (for solvent-based extraction)
Problem: Longer exposure to solvent pulls out more impurities like chlorophyll and tannins.
Fix: Shorten soak time — aim for 20–60 seconds if you're using cold ethanol or ISO.
❄️ 6. No Cold Control
Problem: Warm extraction temperatures pull more unwanted dark compounds.
Fix: Use cold ethanol or butane (e.g., –40°C) to reduce chlorophyll and wax solubility.
🧯 7. Oxidation
Problem: Exposure to air/light/heat causes cannabinoids and terpenes to oxidize, turning extract dark.
Fix: Work in low-light conditions, store in airtight containers, purge under vacuum, and keep cool.
🎯 BONUS TIPS (Depending on Extraction Method)
Method Best Practices
Rosin Low-temp press, use quality flower, dry material, use filter bags
Ethanol Cryo temps (–40°C), short soak, winterize and purge properly
BHO Closed-loop system, cold temps, proper vacuum purge
ISO Very short washes, use cold solvent, avoid heat after wash