L-ASCORBIC ACID 10 lbs. Powder Vitamin C Pure USP Non-GMO Vegan Non-Irradiated For Sale

L-Ascorbic Acid — USP Grade Vitamin C Powder Non-GMO · Vegan · Non-Irradiated · Zero Additives
10 lbs. In resealable Light Proof and Zip-Lock Mylar Bag (Prevents Oxygen Diffusion into the product)Every seller says, \"100% pure\" Almost none will tell you what actually makes ascorbic acid good.Purity is the easy part — USP assay is a pass/fail line and most suppliers clear it. What separates powder that makes a serum lasting three weeks from powder that browns in four days has almost nothing to do with the assay number on the front of the bag.Four things decide it. Here\'s all of them, including the two nobody talks about.1. Oxidation State — and you can verify this yourself in ten secondsAscorbic acid begins degrading the moment it meets air and moisture. The degradation is visible: white → faint cream → yellow → brown. By the time it\'s yellow it has lost potency, and browned material is actively pro-oxidant.Bulk suppliers scoop from drums that have been open on a warehouse floor for months. The powder was fine when it left the manufacturer. It isn\'t fine now.We package to order from sealed manufacturer stock. Open the pouch and it should be bright, clean white — not cream, not ivory. That\'s not a marketing claim you have to trust. It\'s the first thing you\'ll see, and it tells you everything about how it was handled before it reached you.2. Trace Metals — the reason your last serum died earlyThis is the one almost nobody understands, and it matters more than purity.Iron and copper catalyze ascorbic acid oxidation. Not a little — dramatically. Parts-per-million quantities of residual metal will destroy a serum that would otherwise have held for weeks. It\'s why every formulation guide insists on distilled water and warns against metal utensils.But here\'s what those guides miss: if the trace metal is already in the powder, distilled water won\'t save you. You can do everything right and still watch your serum turn amber in days, because the catalyst came in the bag.USP specifies limits on heavy metals for safety reasons. For a formulator, that same specification is a stability specification. Low residual metals is the single most predictive quality factor for how long your finished serum lasts.Ask us for the COA and look at the heavy metals line. Most sellers in this category can\'t produce one on request. That, by itself, tells you something.3. Particle Size — why it dissolves clean or leaves gritCoarse or inconsistently sized crystals dissolve slowly and unevenly. In a serum that means undissolved particles suspended in the finished product, a gritty feel, and a concentration you can\'t actually calculate because some of your active never went into solution.Fine, uniform mesh dissolves completely and quickly, at room temperature, without heating — which matters, because heat accelerates the degradation you\'re trying to avoid.Our mesh spec is 100, stated on the listing, not left vague.4. What Isn\'t in ItPlenty of bulk powder carries anti-caking and flow agents — usually silicon dioxide — added so it runs cleanly through automated filling equipment. Nobody declares it, because at low levels they don\'t have to.In dry-blend applications that\'s harmless. In a serum it clouds your product, and no amount of stirring will clear it.This is L-ascorbic acid and nothing else. No flow agents. No excipients. No fillers. No anti-caking agents. Non-irradiated — irradiation degrades ascorbic acid, which is why we source non-irradiated material rather than treating it as a marketing checkbox.How We CompareThis listingTypical bulk powderPackagedFresh to order, sealed stockScooped from open drumsColor on arrivalBright whiteOften cream or faint yellowAnti-caking agentsNoneFrequently present, undeclaredCOASent on request, before purchaseUsually unavailableMesh specifiedYes, statedRarely statedPackagingFoil moisture-barrier, resealablePlain poly bagNon-irradiatedYesOften unstatedSpecificationsChemical nameL-Ascorbic Acid (Vitamin C)Assay99.0–100.5%, USP monographCAS #50-81-7FormFine white crystalline powderMesh100Loss on drying>12 PPMHeavy metals.1%SolubilityFreely soluble in water (~33 g/100 ml at 20 °C)AdditivesNoneNon-GMO · Vegan · Non-Irradiated · Gluten-FreeYesNet weight10 lbs.PackagingResealable Mylar foil moisture-barrier pouchFormulating With It
Vitamin C SerumsTypical formulation is 10–20% of total weight in distilled water, with glycerin as humectant. Adding ferulic acid at 0.5% and vitamin E at 1% roughly doubles the stability of the finished serum — the well-known Duke University architecture that most premium commercial serums are built on.

• Distilled water only. Tap water carries the iron and copper we just spent a section talking about.
• Target pH 3.0–3.5. Below stings; above penetrates poorly.
• Small batches — 30 ml. Homemade serum is a 1–2 week product, not a six-month one.
• Amber or cobalt glass, refrigerated.
• Color is the expiry date. Clear or faint straw is good. Yellow is going. Orange or brown, discard.
• Don\'t exceed 20%. Absorption plateaus; irritation doesn\'t.

Food, Canning & PreservingPrevents browning in cut fruit and vegetables. Standard in home canning, fruit leather, dried fruit, and as a dough conditioner in baking.Home Brewing & WinemakingOxygen scavenger and antioxidant in wine and cider production.Bath Bombs & Cosmetic CraftingWorks alongside citric acid in effervescent formulations.Laboratory & AnalyticalReducing agent and reagent applications.StorageAscorbic acid is hygroscopic — it pulls water from the air, then clumps and degrades. Reseal immediately, store cool, dark, and dry.Keep it away from iron and copper containers and utensils. Glass, stainless steel, or plastic only. Everything in section 2 applies to your kitchen as much as to our supplier\'s plant.Why Buy From UsWe\'ll send the COA before you buy. Message us. Look at the assay, the heavy metals, the loss on drying. Then compare against anyone else selling this — and notice how many can\'t produce one.Packaged fresh to order from sealed stock. The whiteness of what arrives is your proof, and you\'ll see it before you\'ve spent a minute of formulation time.Resealable foil moisture-barrier pouch. Store it as it arrives instead of re-bagging the moment it lands.Zero additives. Nothing to cloud a serum, nothing undeclared.Mesh specification stated, not left vague.Weighed accurately. Full stated weight, every order. Check it on your own scale — we\'d encourage it.Same or next business day dispatch, tracked from (state). No padded handling window.We formulate with this ourselves and we answer messages — usually within hours. Unsure whether L-ascorbic acid or a more stable derivative like sodium ascorbyl phosphate suits your project? Ask before you order. We would honestly rather talk you into a different product, or point you to another seller, than process a return.We stock the rest of your bench. Vegetable glycerin, benzyl alcohol, citric acid and more — build a complete serum formulation from one seller, one shipment, one charge. Message for a combined quote before you pay.30-day returns, no argument.80,000 + orders shipped · 99.9% positive response. We\'re not a drop shipper. We stock it, weigh it, pack it, and ship it — when something goes wrong, you\'re talking to the person who put it in the box.