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    Ascorbic Acid (C6H8O6) (CAS: 50-81-7) - Ascorbic Acid ...
    Ascorbic acid powder (CAS 50-81-7,
    C6H8O6cap C sub 6 cap H sub 8 cap O sub 6
    𝐶6𝐻8𝑂6
    ) is a high-purity (99%+), water-soluble, white crystalline powder often known as Vitamin C. It functions as a strong antioxidant, essential nutrient, and food preservative (E300). It is widely used in pharmaceuticals, skincare, and food fortification. 
    Key Technical & Physical Properties 
    • CAS Number: 50-81-7
    • Molecular Formula:
      C6H8O6cap C sub 6 cap H sub 8 cap O sub 6
      𝐶6𝐻8𝑂6
    • Molecular Weight: 176.12 g/mol
    • Appearance: White to slightly yellow crystalline powder/crystals
    • Solubility: Freely soluble in water; soluble in ethanol
    • Melting Point: ~190–192 °C (decomposes)
    • Acidity/pKa: Strongly acidic in solution (
      𝑝𝐾𝑎1
      =4.1
      ,
      𝑝𝐾𝑎2
      =11.8
      )       
    Common Applications 
    • Dietary Supplements: A key, bioavailable form of Vitamin C to prevent scurvy.
    • Food Industry: Used as an antioxidant and antioxidant food additive to prevent browning and enhance shelf life.
    • Cosmetics: Used in skincare formulations for antioxidant protection and skin brightening. 
    Stability & Storage 
    • Sensitivity: Sensitive to moisture, heat, and air (oxidizes over time).
    • Storage: Store in a cool, dry place away from light, typically maintaining a 3-year shelf life.
    • Grade Availability: USP/EP/FCC/BP grades are common for food and pharmaceutical applications. 
    • CAS RN 50-81-7 | Fisher Scientific
      L-Ascorbic Acid 99.0+%, TCI America™ CAS: 50-81-7 Molecular Formula: C6H8O6 Molecular Weight (g/mol): 176.12 MDL Number: MFCD00064...
      Fisher Scientific
    • C6h8o6 - Sigma-Aldrich
      ACS reagent grade, ≥99%, powder or chunks, crystals or granules, HPLC. Synonym(s): L-Threoascorbic acid, Antiscorbutic factor, Vit...
      Sigma-Aldrich
    • L-Ascorbic Acid Powder (C6H8O6), Food Grade BP/USP Bioactive, ...
      L-Ascorbic Acid Powder (C6H8O6), Food Grade BP/USP Bioactive, Non-GMO. ... Shipping calculated at checkout. ... L-Ascorbic acid (C...
      Kalustyan's
    Show all
    • CAS RN 50-81-7 | Fisher Scientific
      L-Ascorbic Acid 99.0+%, TCI America™ CAS: 50-81-7 Molecular Formula: C6H8O6 Molecular Weight (g/mol): 176.12 MDL Number: MFCD00064...
      Fisher Scientific
    • C6h8o6 - Sigma-Aldrich
      ACS reagent grade, ≥99%, powder or chunks, crystals or granules, HPLC. Synonym(s): L-Threoascorbic acid, Antiscorbutic factor, Vit...
      Sigma-Aldrich
    • L-Ascorbic Acid Powder (C6H8O6), Food Grade BP/USP Bioactive, ...
      L-Ascorbic Acid Powder (C6H8O6), Food Grade BP/USP Bioactive, Non-GMO. ... Shipping calculated at checkout. ... L-Ascorbic acid (C...
      Kalustyan's
    • Ascorbic Acid Powder CAS No. 50-81-7 - Stanford Chemicals
      Ascorbic Acid Powder Description Ascorbic Acid Powder (C6H8O6) is a high-purity crystalline compound supplied in free-flowing powd...
      Stanford Chemicals
    • Chemistry of ascorbic acid - Wikipedia
      This article is about the molecular aspects of ascorbic acid. For information about its role in nutrition, see Vitamin C. Ascorbic...
      Wikipedia
    • Ascorbic Acid | 50-81-7 - ChemicalBook
      Mar 9, 2026 — Physical properties. Appearance: white crystal or crystalline powder, and it is odorless and flavors sour. The color changes yello...
      ChemicalBook
    • Ascorbic Acid (Vitamin C) USP/FCC, Kosher 99% - 100.5%
      Ascorbic Acid, commonly known as Vitamin C, is a high-purity compound (99% - 100.5%) with multiple applications in pharmaceuticals...
      Science Kit Store
    • ascorbic acid (vitamin C) oral powder | Kaiser Permanente
      Jan 15, 2026 — Ascorbic acid (vitamin C) is used to prevent or treat low levels of vitamin C in people who do not get enough of the vitamin from ...
      Kaiser Permanente
    • Customer Questions & Answers - Amazon.com
      The expiration date for ascorbic acid is typically set as 3 years from date of manufacturing. The shelf life will depend on many f...
      Amazon.com
    • High Quality Ascorbic Acid Powder | CAS C6H8O6
      High Quality Ascorbic Acid Powder | CAS C6H8O6. Ascorbic acid, also known as vitamin C, is a highly effective water-soluble antiox...
      www.leafchem.com
    • The Ordinary 100% L-Ascorbic Acid Powder
      100% L-Ascorbic Acid Powder is a powdered form of direct vitamin C that visibly reduces signs of aging by brightening and balancin...
      The Ordinary
    • C-Salts Buffered Vitamin C Powder - Pure Organic, Stomach Friendly ...
      Pure Clean Ingredients: This organic vitamin c powder contains zero sugar, artificial sweeteners, additives, preservatives, or fil...
      Amazon.com
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    Web results

    CAS RN 50-81-7


    Fisher Scientific
    https://www.fishersci.com › Products
    Fisher Scientific
    https://www.fishersci.com › Products
    L-(+)-Ascorbic acid, 99+%. CAS: 50-81-7 Molecular Formula: C6H8O6 ... L-(+)-Ascorbic Acid, Powder, BAKER ANALYZED™ Biochemical Reagent, J.T. Baker™.Read more

    Ascorbic-acid | C6H8O6 | CID 155903693 - PubChem


    National Institutes of Health (.gov)
    https://pubchem.ncbi.nlm.nih.gov › compound › Ascor...
    National Institutes of Health (.gov)
    https://pubchem.ncbi.nlm.nih.gov › compound › Ascor...
    Ascorbic-acid ; Molecular Formula. C6H8O ; Synonyms. ascorbic-acid; PD132972 ; Molecular Weight. 176.12 g/mol. Computed by PubChem 2.1 (PubChem release 2021.05.07).Read more

    High Quality Ascorbic Acid Powder | CAS C6H8O6


    Anhui Leafchem Co., Ltd.
    https://www.leafchem.com › product › high-quality-asco...
    Anhui Leafchem Co., Ltd.
    https://www.leafchem.com › product › high-quality-asco...
    Ascorbic acid, also known as vitamin C, is a highly effective water-soluble antioxidant and an indispensable essential nutrient for the human body.Read more

    C6h8o6


    Sigma-Aldrich
    https://www.sigmaaldrich.com › search › c6h8o6 › ter...
    Sigma-Aldrich
    https://www.sigmaaldrich.com › search › c6h8o6 › ter...
    c6h8o6 ; L-Ascorbic acid 99% · A92902 · 99% ; Ascorbic Acid Pharmaceutical Secondary Standard; Certified Reference Material · PHR1008.Read more
    4.3 store rating (10) · $34 to $511 · 2–4 day delivery

    Chemistry of ascorbic acid


    Wikipedia
    https://en.wikipedia.org › wiki › Chemistry_of_ascorbic...
    Wikipedia
    https://en.wikipedia.org › wiki › Chemistry_of_ascorbic...
    Ascorbic acid is an organic compound with the formula C 6H 8O 6, originally called hexuronic acid. It is a white solid, but impure samples can appear ...Read more

    Ascorbic Acid [C6H8O6] 99.9% ACS Grade Powder 1 Lb in ...


    eBay
    https://www.ebay.com › itm
    eBay
    https://www.ebay.com › itm
    Ascorbic Acid [C6H8O6] 99.9% ACS Grade Powder 1 Lb in Two Wide-Mouth Bottles USA ; Grade: ACS Reagent/Food Grade ; Accurate description. 4.9 ; Reasonable shipping ...Read more
    $34.99 · In stock · Free delivery · 30-day returns
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    Ascorbic acid (vitamin C, C6H8O6) is a water-soluble vitamin.Jul 22, 2022

    Ascorbic acid (vitamin C, C6H8O6) is a water-soluble vitamin. - Pearson


    Pearson
    https://www.pearson.com › ch-13-properties-of-solutions
    Pearson
    https://www.pearson.com › ch-13-properties-of-solutions

    Web results

    Ascorbic Acid (Vitamin C) USP/FCC, Kosher 99% - 100.5%


    Science Kit Store
    https://sciencekitstore.com › ascorbic-acid-vitamin-c-usp-...
    Science Kit Store
    https://sciencekitstore.com › ascorbic-acid-vitamin-c-usp-...
    Product Specifications ; Chemical Formula, C₆H₈O₆ ; CAS Number, 50-81-7 ; Form, Colorless crystals or white powder ; Lead, ≤ 10 ppm ; Iron, ≤ 2 ppm.Read more
    $45.00 · In stock · $5.99 delivery · Free 30-day returns

    L-Ascorbic Acid | C6H8O6 | CID 54670067


    National Institutes of Health (.gov)
    https://pubchem.ncbi.nlm.nih.gov › compound
    National Institutes of Health (.gov)
    https://pubchem.ncbi.nlm.nih.gov › compound
    L-Ascorbic Acid | C6H8O6 | CID 54670067 - structure, chemical names, physical and chemical properties, classification, patents, literature, ...

    Buy Ascorbic Acid: supplier, wholesaler, distributor


    Brenntag
    https://www.brenntag.com › Homepage › Products
    Brenntag
    https://www.brenntag.com › Homepage › Products
    Ascorbic Acid ; Chemical Formula: C6H8O6 ; CAS Number: 50-81-7 ; Molar Weight: 176.124g/mol ; Density: 1.694 g/cc ; Forms: Powder, White, Yellow, Crystalline ...Read more

    Ascorbic acid Powder [Vitamin C] - Coated with Glyceryl ...


    Vita Actives
    https://vitaactives.com › ascorbic-acid-powder-vitamin-c-...
    Vita Actives
    https://vitaactives.com › ascorbic-acid-powder-vitamin-c-...
    CAS Number: 50-81-7 [Pure Ascorbic acid] ; EC Number: 200-066-2 [Pure Ascorbic acid] ; Chemical Formula: C6H8O6 [Pure Ascorbic acid] ; Molecular Weight: 176.13 g/ ...Read more
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