Short Description:


SynonymsL-2-Amino-3-hydroxybutyric acid; (2S,3R)-2-Amino-3-hydroxybutyric acid

Molecular FormulaC4H9NO3

Molecular Weight119.12

CAS Registry Number72-19-5


Packing:25kg bag/drum/carton

Port of loading: China main port

Port of dispapch:Shanghai ; Qindao;Tianjin

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L- threonine is a kind of amino acid which can not be synthesized by animal itself, but it is very necessary. It can be used to balance the amino acid composition of feed accurately, meet the needs of animal growth maintenance, increase weight gain and lean meat rate, reduce the ratio of meat and meat, improve the nutritional value of feed raw materials with low amino acid digestibility and improve the production performance of low energy feed. 
L – threonine can adjust the balance of amino acids in the feed, promote the growth, improve the meat quality, improve the nutritional value of the feed raw materials with low amino acid digestibility, produce low protein feed, help to save the protein resources, reduce the cost of feed raw materials, reduce the nitrogen content in the feces and urine of livestock and poultry, and the concentration of ammonia in livestock and poultry houses and release speed.

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    White to light brown, crystal powder


    98.5 Min

    Specific rotation(°)

    -26 ~ -29

    Loss on drying(%)

    1.0 Max

    Residue on ignition(%)

    0.5 Max

    Heavy metals(ppm)

    20 Max


    2 Max

    Storage: in dry, cool, and shaded place with original packaging, avoid moisture, store at room temperature.

    Shelf Life: 48 months 

    Package:in 25kg/bag


    1. What’s your payment terms?
    T/T or L/C.

    2. What’s your delivery time?
    Usually we will arrange the shipment in 7 -15 days.

    3. How about the packing?
    Usually we provide the packing as 25 kg / bag or carton. Of course, if you have special requirements on them, we will according to you.

    4. How about the validity of the products?
    According to the products you ordered.

    5. What documents you provide? 
    Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

    6. What is loading port?
    Usually is Shanghai,Qingdao or Tianjin.

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