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    Home > Food News > Food Articles > How does carmine pigment dissolve water

    How does carmine pigment dissolve water

    • Last Update: 2019-03-26
    • Source: Internet
    • Author: User
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    Introduction: carmine is a kind of water-soluble macromolecular food pigment So, how does Rouge pigment dissolve water? Come and have a look with you! Carmine, also known as edible red 102 (Japan), edible red 7, Ponceau 4R, scarlet and bright scarlet, is an aqueous azo colorant So, how does Rouge pigment dissolve water? Let's introduce the small edition of Baibai safety net! How to dissolve carmine pigment in water (1) dissolve 0.1g of this product in 100ml of water, which is a red clear solution (2) This product is slightly soluble in ethanol and insoluble in grease It has the characteristics of acid dyes, which can make animal fibers colored (3) The maximum absorption wavelength of 100ml 0.02mol/l ammonium acetate solution containing 0.001g of this product is 508 ± 2nm (4) Take the aqueous solution of this product for paper chromatography, and the RF value of its main color point should be the same as that of the standard sample Paper chromatography conditions: n-butanol: anhydrous ethanol: ammonia (1%) = 6:2:3 Temperature 20-25c The concentration of test solution is 0.1g/100ml The dosage of test solution is 2ul The rising limit of developing agent front is 150nm The above is how Rouge pigment dissolves water After reading it, I believe you all know! If you want to know more about food safety Please pay more attention to Baibai Security Internet bar! Editor in charge: Wang Xiujuan
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