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Ponceau 4R (Acid Red 18) 是一种合成草莓红偶氮染料,是一种可用为食品着色剂染料,可用于各种食品。它对光、热和酸都很稳定,但在抗坏血酸存在下会褪色。它通常由芳香烃合成。
Ponceau 4R (Acid Red 18) 是一种合成草莓红偶氮染料,是一种可用为食品着色剂染料,可用于各种食品。它对光、热和酸都很稳定,但在抗坏血酸存在下会褪色。它通常由芳香烃合成。
规格 | 价格 | 库存 | 数量 |
---|---|---|---|
500 mg | ¥ 333 | 现货 | |
1 g | ¥ 418 | 现货 | |
1 mL x 10 mM (in DMSO) | ¥ 418 | 现货 |
产品描述 | Ponceau 4R (Acid Red 18) is a synthetic strawberry red azo dye that is a food colorant dye used in a variety of food products. It is stable to light, heat and acid, but fades in the presence of ascorbic acid. It is usually synthesized from aromatic hydrocarbons. |
别名 | New Coccine, Acid Red 18 |
分子量 | 604.46 |
分子式 | C20H11N2Na3O10S3 |
CAS No. | 2611-82-7 |
Smiles | O=S([O-])(C1=CC2=CC=C(C(/N=N/C3=CC=C(S(=O)([O-])=O)C4=C3C=CC=C4)=C2C(S(=O)([O-])=O)=C1)O)=O.[Na+].[Na+].[Na+] |
密度 | Ca. 1.772. Temperature:20 °C. |
存储 | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. | ||||||||||||||||||||||||||||||
溶解度信息 | H2O: 22.5 mg/mL (37.2 mM), Sonication is recommended. DMSO: 9.0 mg/mL (14.9 mM), Sonication and heating to 60℃ are recommended. | ||||||||||||||||||||||||||||||
溶液配制表 | |||||||||||||||||||||||||||||||
DMSO/H2O
H2O
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