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Acid Red FR

Acid Red FR;Type: Acid Dyes, Red FR;CAS NO: 3520-42-1;EINECS:222-529-8;Molecular Formula: C27H29N2NaO7S2;Molecular weight: 580.6481
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Product Introduction

Acid Red FR

Type: Acid Dyes, Red FR 100%

CAS NO: 3520-42-1


Molecular Formula: C27H29N2NaO7S2

Molecular weight: 580.6481

Chemical Structure:

Chemical properities:

The aqueous solution was blue red with yellow fluorescence, and the sodium hydroxide solution was blue red. Soluble in ethanol. It is orange yellow in concentrated sulfuric acid and red when diluted

Identify test edit speech

(1) The aqueous solution of the product (1+1000) is red with blue light and emits light yellow fluorescence.(2) Take 5ml aqueous solution (1+1000) of the product, add 1ml hydrochloric acid, it turns red, and the fluorescence remains unchanged.(3) The sulfuric acid solution (1+100) of this product shows orange yellow and emits greenish-yellow fluorescence. When 2-3 drops of this solution are taken and added to 5ml water, it shows blue red and emits a slight greenish-yellow fluorescence.(4) Take 0.1g of the product, add 500ml ammonium acetate solution (3+2000) to dissolve, take 1ml of this solution, add ammonium acetate solution (3+2000) to 200ml solution, and have the maximum absorption band at the wavelength of 564-568nm.


1、Mainly used for wool fabric dyeing, silk, nylon or silk, nylon blend fabric dyeing and leather, can             also be used for cosmetic coloring. 2、Acidic red can also be used to make toilet fluid, hand sanitizer and other cleaning products。


    Trader or factory? We have our own factory.

    Do you provide samples, is it free? We can provide free samples.

    What payment methods are supported? L/C Western Union D/P D/A T/T MoneyGram

    Do you have a certificate? We have OEKO TEX, BLUE SIGN, ZDHC.

    What is the minimum order quantity? 25KG

    Which logistics modes can be supported? We support express, sea, land, air.

    Which shipping port is shipped from? Shanghai, China

    How is the packaging? 25KG NEW CARTON BOX

Hot Tags: acid red fr, suppliers, manufacturers, factory, low price
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