DSD acid

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Chemical name: 4,4-Diaminostilbene-2,2-disulfonic acid Commodity name: DSD Acid Molecular Formula: C14H14N2O6S2 Molecular Weight: 370.4 Physical and chemical properties: 1) Light yellow paste or powder, soluble in alcohol and ether insoluble in water, readily soluble in a aqueous solution of alkali. 2) Easy be oxidated to red in air, it has properties of aromatic acid and aromatic amine. Specifications: 1) Appearance: Light yellow powder or paste 2) Total drying Amido Value % ≥ 95.0 3) Benzyl Content % ≤ 0.25 4) Alkali Insolubility % ≤ 0.1 5) ∑OD ≤ 0.1 6) Ash content % ≤ 1.5 Main Usage: Used in the manufacture of fluorescent whitening agent、direct dyes、reactive dyes, and used as sect preventive etc Packing: For powders 25kg net poly-woven bags or as the customers requirements.

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Tianjin Yuanhai Fine Chemical Industry Co., Ltd.

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