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L-ascorbic acid

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FOB Price $3.50

Origin: China

Cas No: 50-81-7

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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  • Products Specification
  • Product Description

  • Quick Details

    CAS No.:
    50-81-7
    Other Names:
    Ascorbic Acid Coated
    MF:
    C6H8O6
    EINECS No.:
    200-066-2
    FEMA No.:
    NA
    Place of Origin:
    China
    Type:
    Vitamins
    Brand Name:
    ALL
    Model Number:
    /
    Application::
    Nutritient supplement,Animal Pharmaceuticals
    Assay::
    Min97%
    Grade::
    Food grade/Feed grade/USP/BP/EP/FCC
    Storage::
    Cool Dry Place
    Packing::
    25kg/carton
    Shelf Life::
    2 Years
    Certificate::
    ISO9001/Halal/Kosher
    Characteristics::
    White or Semi-white Granule
    Key word::
    Coated
    MOQ:
    100KGS

    Packaging&Delivery

    Selling Units:
    Single item
    Single package size: 
    15X5X10 cm
    Single gross weight:
    1.200 kg
    Package Type:
    25KG/CARTON
    Lead Time:
    Quantity(Kilograms)1 - 1>1
    Est. Time(days)3To be negotiated

    Products Description

    PRODUCT NAME:
    COATED ASCORBIC ACID
    SHELF LIFE:
    24 months
    PACKING:
    25kgs/carton
    STANDARD
    GB26687-2011
    ITEM
    STANDARD
    Appearance
    White or Semi-white Granule
    Heavy metals 
    ≤0.001%
    Arsenic
    ≤0.0002%
    Lead
    ≤0.0002%
    Loss on drying
    ≤0.4%
    Residue on ignition
    ≤0.1%
    Assay
    ≥97.0%
    Total plate count
    ≤1000cfu/g
    Mould&Yeast
    ≤100cfu/g
    E-coli.
    Absence in 1g
    Salmonella
    Absence in 25g
    Staphylococcus Aurers
    Absence in 25g

  • Property

    CAS No.: 50-81-7 Formula: C6H8O6 Molecular Weight: 176.12400

    Description

    Ascorbic acid is a naturally occurring organic compound with antioxidant properties. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. Ascorbic acid is one form ("vitamer") of vitamin C. It was originally called L-hexuronic acid, but, when it was found to have vitamin C activity in animals ("vitamin C" being defined as a vitamin activity, not then a specific substance), the suggestion was made to rename it. The new name, ascorbic acid, is derived from a- (meaning "no") and scorbutus (scurvy), the disease caused by a deficiency of vitamin C. Because it is derived from glucose, many non-human animals are able to produce it, but humans require it as part of their nutrition. Other vertebrates which lack the ability to produce ascorbic acid include some primates, guinea pigs, teleost fishes, bats, and some birds, all of which require it as a dietary micronutrient (that is, in vitamin form).

    Basic Info

    Chemical Name L-ascorbic acid
    Synonyms

    L-Ascorbic acid(C);
    L-Threoascorbic acid,Antiscorbutic factor,Vitamin C;
    L-Ascorbic acid;
    (R)-5-((S)-1,2-Dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one;
    L(+)-Ascorbic acid;

    CAS No. 50-81-7
    Molecular Formula C6H8O6
    Molecular Weight 176.12400
    PSA 107.22000
    LogP -1.40740

    Properties

    Appearance & Physical State White to very pale yellow crystalline powder with a pleasant sharp acidic taste
    Density 1.7
    Boiling Point 415.8ºC at 760 mmHg
    Melting Point 190-192ºC
    Flash Point 180.4ºC
    Refractive Index 1.711
    Water Solubility 333 g/L (20 ºC)
    Stability Stable. May be weakly light or air sensitive. Incompatible with oxidizing agents, alkalies, iron, copper.
    Storage Condition 0-6ºC

    Safety Info

    RTECS CI7650000
    Safety Statements S24/25
    HS Code 29362700
    WGK Germany 1
    Risk Statements R20/21/22
    Hazard Codes Xn
    Caution Statement P210; P305 + P351 + P338; P370 + P378
    Signal Word Warning
    Hazard Declaration H226; H319
    Symbol GHS02, GHS07

    Synthesis Route

    (3R,4R,5S)-3,4,5,6-Tetrahydroxy-2-oxo-hexanoic acid methyl ester→L-ascorbic acid
    methyl 2-keto-3,5:4,6-di-O-ethylidene galactonate→L-ascorbic acid
    (S)-4-(3,4-bis((4-methoxybenzyl)oxy)furan-2-yl)-2,2-dimethyl-1,3-dioxolane→Anisic aldehyde+L-ascorbic acid

    Toxicity

    Exposure Route Type of Test Species Observed Dose/Duration Toxic Effects
    Intravenous TDLo - Lowest published toxic dose Human - man 2300 mg/kg/2D 1.Blood-oxidant related (GPD deficient) anemia
    Intravenous LDLo - Lowest published lethal dose Human - woman 900 mg/kg 1.Kidney, Ureter, Bladder-changes in tubules (including acute renal failure, acute tubular necrosis)
    Oral LD50 - Lethal dose, 50 percent kill Rodent - rat 11900 mg/kg 1.Sense Organs and Special Senses (Eye)-lacrimation
    2.Behavioral-somnolence (general depressed activity)
    3.Gastrointestinal-hypermotility, diarrhea

    Precursor

    (S)-4-(3,4-bis((4-methoxybenzyl)oxy)furan-2-yl)-2,2-dimethyl-1,3-dioxolane
    methyl 2-keto-3,5:4,6-di-O-ethylidene galactonate

    (3R,4R,5S)-3,4,5,6-Tetrahydroxy-2-oxo-hexanoic acid methyl ester

    Downstream Product

    2-acetylfuran
    5,6-diacetoxy-L-ascorbic acid
    2-methyloxolan-3-one
    [(2S)-2-[(2R)-3,4-dihydroxy-5-oxo-2H-furan-2-yl]-2-hydroxyethyl] (6Z,9Z,12Z)-octadeca-6,9,12-trienoate

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