CBG isolate is cannabigerol refined to 99% or higher purity, the highest-concentration, most precisely controlled form of CBG. For manufacturers and formulators who need a single-cannabinoid CBG ingredient for dose-controlled formulations, encapsulated products, or specialty applications, CBG isolate is the specification to work from. Its main handling quirk is crystallization, and it is worth understanding before a first order arrives, because finding out about it after delivery is an avoidable production problem. Current sizes, specs and the representative COA are on the CBG isolate product page.
| Spec | CBG isolate |
|---|---|
| Potency | 99%+ CBG |
| Form | White crystalline powder; recrystallizes readily |
| Delta-9 THC | Non-detect (confirm on the lot COA) |
| Typical sizes | Usually sold from 100g to 1kg upward |
What CBG Isolate Is
CBG isolate is hemp-derived cannabigerol that has been extracted from CBG-dominant hemp plant material and refined through a chromatographic or crystallization purification process to remove all other cannabinoids, terpenes, waxes, and plant compounds. The result is a white to off-white crystalline powder containing 99% or more cannabigerol by weight, with the balance typically consisting of residual CBD and trace minor cannabinoids.
The purity threshold matters more for CBG isolate than for many other hemp ingredients because the buyers sourcing it are usually working on formulations where cannabinoid precision is a product claim or a formulation requirement. A lot that tests at 96% CBG instead of 99%+ is a different product for a dose-controlled formulation, not merely a lower-grade version of the same product.
Crystallization: The Physical Property Every CBG Buyer Needs to Know
CBG isolate has a lower melting point than CBD isolate (about 50 C versus about 67 C), so it softens and cakes more easily in warm storage. While CBD isolate typically remains powdery and free-flowing at room temperature and will only begin to aggregate under warm or humid conditions, CBG isolate can begin to recrystallize and harden at normal ambient temperatures, particularly if the material was dissolved and then allowed to cool slowly, or if storage conditions fluctuate.
This is not a quality defect. It is a physical property of the CBG molecule: CBG melts at about 50 C, well below CBD at about 67 C. The practical implications for buyers are:
Automated filling equipment: CBG isolate that has begun to aggregate or compact can bridge in hoppers, clog transfer lines, or behave inconsistently in weigh-filling operations designed for free-flowing powder. Confirm with your equipment supplier that your filling process handles materials with higher crystallization tendency, or plan for controlled-temperature production conditions.
Tincture formulation: CBG isolate dissolved in carrier oil can recrystallize if the finished product cools rapidly or is stored below the crystallization threshold. A stability test at the intended storage temperature before committing to a production run is standard practice for CBG-based tinctures.
Storage conditions: Store CBG isolate in sealed containers in a cool, dry environment. Avoid temperature fluctuation. If CBG has crystallized out of a carrier oil, gentle warming to about 40 degrees Celsius with stirring will redissolve it; keep dry isolate below about 40 degrees Celsius, since CBG melts at about 50 degrees Celsius.
Managing crystallization correctly is the difference between a smooth production integration and an avoidable first-order problem.
| Property | CBG isolate | CBD isolate |
|---|---|---|
| Purity | 99%+ | 99%+ |
| Recrystallization | Recrystallizes and hardens more readily, even at normal room temperature | Typically stays powdery and free-flowing at room temperature |
| Storage | Sealed, cool, dry and at a stable temperature | Sealed, cool and dry |
| Liquid formulas | Run a stability test at the intended storage temperature, or use crystal resistant CBG distillate (45 to 60%+ CBG, formulated to stay pourable) | Less prone to recrystallize than CBG |
For a full side-by-side of the two cannabinoids, see CBG vs. CBD: The B2B Formulator's Comparison Guide.
Typical Potency Specs and What to Look for on the COA
A quality wholesale CBG isolate lot will show the following on a full-panel COA:
CBG%: 99% or higher by weight. This is the primary specification. Lots below 99% should be questioned on the purification process; lots below 95% are by most definitions not isolate-grade material.
Residual CBD: The most common secondary cannabinoid in CBG isolate, typically 0.1% to 0.8%. For formulations where CBD presence at any level is a concern, confirm the CBD value on the specific lot. For most multi-cannabinoid formulation contexts, trace CBD is not a functional issue.
Total THC: Should show non-detect across all three fractions (delta-9, delta-8, THCA) on a lot-specific COA from an ISO 17025-accredited, third-party, DEA-registered laboratory. CBG isolate derived from compliant hemp feedstock will be well within compliance on total THC.
Residual solvents: The purification process for CBG isolate typically involves solvent use. Confirm that the residual solvents panel shows results within USP Class 3 limits at minimum.
Formulation Applications for CBG Isolate
CBG isolate is the appropriate form when precision, purity, and single-cannabinoid control are the formulation requirements:
Encapsulated products: CBG isolate is well-suited for capsule and softgel formats where a defined mg-per-unit dose of pure CBG is the specification. The crystallization behavior is less operationally significant in a solid-fill format than in a liquid one, and the precision of isolate-grade purity supports label claim verification.
Research and pharmaceutical-adjacent applications: Buyers in niche application areas where CBG purity and documentation standard are primary requirements (research formulations, compounding contexts, specialized topicals with defined cannabinoid profiles) are the natural home for isolate-grade CBG.
Standalone CBG products: Brands building a product identity around a single CBG ingredient (CBG isolate tinctures, pure CBG capsules) require isolate-grade material to support that positioning. A 99%+ CBG isolate is the specification that makes the product claim supportable.
Blended multi-cannabinoid formulations requiring precise ratios: When a formulation calls for a defined CBG-to-CBD ratio and the ratio needs to be controlled independently rather than relying on a pre-blended distillate, isolate-grade starting materials for each cannabinoid give the formulator precise control.
CBG Isolate vs. CBG Distillate: Which Form to Source
The choice between CBG isolate and CBG distillate is a formulation requirements decision:
CBG isolate at 99%+ purity is appropriate when single-cannabinoid control, label claim precision, or purity documentation standard are requirements. It costs more per gram of CBG than distillate and requires the crystallization management steps described above.
CBG distillate at 80 to 95% CBG retains the minor cannabinoid and terpene profile of the source plant and is appropriate when a broader-spectrum formulation character is acceptable or desired. It is typically 20% to 40% less expensive per gram of CBG than isolate and is easier to handle in liquid formulation systems. For a full comparison of CBG product forms and their applications, see our complete CBG guide.
| Spec | CBG isolate | Broad spectrum CBG distillate |
|---|---|---|
| CBG content | 99%+ | 80 to 95% |
| Form | White crystalline powder | Gold to amber oil |
| Minor cannabinoids | Removed | Retained |
| Delta-9 THC | Non-detect | 0.3% or less, frequently non-detect |
| Handling | Recrystallizes readily; control storage and process temperatures | Easier to handle in liquid formulations |
| Typical order size | Usually from 100g | Usually from 500g |
| Best fit | Single-cannabinoid control and label claim precision | Liquid formulas where a broader cannabinoid profile is wanted |
From the Field
"CBG isolate crystallizes more readily than CBD, and that catches buyers off guard when it happens in their storage or in their production equipment the first time. We have fielded calls from formulators who thought they received a defective lot because the material had solidified or aggregated in the container. It was not defective; it had crystallized, which is what CBG isolate does under the wrong conditions. The solution is not a return or a replacement; it is knowing the property before the first order arrives and building your storage and production process around it. We walk through this with every new CBG isolate buyer specifically because the call after the fact is always more disruptive than the five-minute conversation before. Gentle warming with stirring will redissolve CBG that has crystallized out of a carrier oil without degrading it."
John Piccone, Founder, Bulk CBD Distributors
Section 781 Compliance and CBG Isolate
CBG isolate derived from compliant hemp feedstock is a non-intoxicating cannabinoid ingredient that is generally expected to remain within the hemp definition, provided total THC limits are met, under Section 781 of P.L. 119-37. Total THC in quality CBG isolate from compliant hemp is well below the 0.3% threshold and typically shows non-detect on all three fractions. Section 781 still affects CBG the same way it affects CBD: total THC (including THCA) counts, cannabinoids that cannot be naturally produced by the plant are excluded from November 12, 2026, and from December 11, 2026 finished consumer products are capped at 0.4 mg total THC per container. Low, documented THC on the lot COA makes that per-container check simple.
Japan-Compliant CBG Isolate
Japan's revised Cannabis Control Act, in force since December 12, 2024, sets residual Delta-9 THC limits by product type: 10 ppm (0.001%) for oils, fats and powders, 0.1 ppm for water-based liquids and 1 ppm for other products. CBG isolate is a powder, so it falls under the 10 ppm limit, and the finished product it goes into must meet the limit for its own type.
A US "non-detect" result is only as good as the lab's limit of quantitation (LOQ). An LOQ of 0.01% equals 100 ppm, ten times Japan's powder limit, so Japan-compliant CBG isolate is tested by a method sensitive enough to show the 10 ppm limit is actually met. Before ordering for Japan, ask for the test method, the LOQ and the import documentation. For Japan-specific sourcing notes, see wholesale cannabinoids for Japan.
Frequently Asked Questions
What makes CBG isolate Japan-compliant?
Japan-compliant CBG isolate is tested by a method sensitive enough to show it meets Japan's 10 ppm residual Delta-9 THC limit for powders, and it comes with the export documentation importers need. A standard US non-detect result is not enough on its own if the lab's LOQ is above 10 ppm.
What is CBG isolate?
CBG isolate is hemp-derived cannabigerol refined to 99% or higher purity, with all other cannabinoids, terpenes, and plant compounds removed. It is the highest-concentration, most precisely controlled form of CBG available for B2B purchase and is used in applications requiring single-cannabinoid precision and full purity documentation.
What is the typical purity of wholesale CBG isolate?
Quality wholesale CBG isolate carries 99% or higher cannabigerol purity by weight. Lots below 99% should be questioned on the purification process. The most common secondary cannabinoid is residual CBD, typically 0.1% to 0.8% on a lot-specific COA. Always request the full minor cannabinoid breakdown for the specific lot being purchased.
Does CBG isolate crystallize?
Yes. CBG isolate has a lower melting point than CBD isolate (about 50 C versus about 67 C), so it softens and cakes more easily in warm storage. This is a molecular property, not a quality defect. Managing it requires appropriate storage conditions (cool, dry, sealed), controlled-temperature production environments for liquid formulations, and awareness of how the material will behave in your specific filling or mixing equipment.
How do I dissolve crystallized CBG isolate?
Gentle warming of the carrier oil to about 40 degrees Celsius, with stirring, will redissolve CBG isolate without degrading the material. Avoid prolonged or repeated heating, which can darken the material. Once dissolved in carrier oil, maintain temperature during the production run to prevent recrystallization.
What is the minimum order for CBG isolate at BCD?
CBG isolate at BCD starts at 100g; minimums across BCD products are 100g to 1kg depending on the product. Current sizes and the representative COA are on the product page.
How does CBG isolate differ from CBG distillate?
CBG isolate is refined to 99%+ purity with all other plant compounds removed. CBG distillate retains minor cannabinoids and terpenes at 80 to 95% CBG content. Isolate is appropriate for precise dosing, label claim support, and applications where purity documentation is a requirement. Distillate is less expensive per gram of CBG and easier to handle in liquid formulations.
Is CBG isolate compliant under Section 781 of P.L. 119-37?
CBG isolate from compliant hemp feedstock is a non-intoxicating cannabinoid ingredient generally expected to remain within the hemp definition, provided total THC limits are met, under Section 781 of P.L. 119-37. Section 781 affects CBG the same way it affects CBD: total THC (including THCA) counts, and from December 11, 2026 finished consumer products are capped at 0.4 mg total THC per container. Quality CBG isolate typically shows non-detect across all three THC fractions, which makes the per-container check simple.
What lab documentation should CBG isolate come with?
Look for lot-specific COA documentation from an ISO 17025-accredited, third-party, DEA-registered laboratory with the accreditation scope covering cannabinoid potency. The COA should include a full minor cannabinoid panel (not just CBG%), a residual solvents panel, and heavy metals results at minimum.
What formulation types use CBG isolate?
CBG isolate is used primarily in encapsulated products (capsules, softgels), standalone CBG tinctures and sublingual formats, blended multi-cannabinoid formulations requiring precise ratio control, and research or pharmaceutical-adjacent applications where purity documentation is a primary requirement.
How should CBG isolate be stored?
Store CBG isolate in a sealed container in a cool, dry environment away from light and humidity fluctuation. Temperature stability is important: fluctuating temperatures increase the rate of crystallization and aggregation. Properly sealed CBG isolate stored at stable cool temperatures maintains quality for 12 to 24 months from the production date.
Compare CBG Isolate and Distillate Specs
If you are deciding between forms, compare current specs and COAs for CBG isolate and broad spectrum CBG distillate, or see every form on the wholesale CBG page. BCD carries CBG isolate, including a Japan-compliant version. We are glad to answer crystallization or formulation questions and put together a quote.
