Fluorescein (lactone form) is a xanthene dye that is highly fluorescent, detectable even when present in minute quantities.
定义
Fluorescein (lactone form) is a xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy. It has a role as a radioopaque medium and a fluorescent dye. It is a polyphenol, a gamma-lactone, a xanthene dye, an oxaspiro compound, an organic heteropentacyclic compound and a member of 2-benzofurans. It is functionally related to a fluorescein (acid form).
来源: PubChem
美国FDA 物质登记 · UNII TPY09G7XIR · 登记名称 Fluorescein · 单一化学物质
Acid Yellow 73 is classed chemically as a fluoran colour. It conforms to the formula:
化妆品中的作用
安全与法规参考
- 禁用
- 阿根廷 · 巴西 · 东盟 · 欧盟
- 限用·禁用
- 中国
来源: 韩国食药处 化妆品法规信息
未列入韩国有毒物质 GHS 分类 · 现有化学物质
Restriction II/1332 (when used as a substance in hair dye products)
来源: 欧盟 CosIng 成分清单
详细资料——标示名称、识别编号、物性、试验记录、文献
别名和识别信息
- CAS No.化学物质登记号
- 2321-07-5
- EC No.欧盟化学品目录编号
- 219-031-8
- DTXSID美国EPA化学品编号
- DTXSID0038887
- DTXCID美国EPA化合物编号
- DTXCID8018887
- IUPAC
- 3',6'-Dihydroxy-3H-spiro[[2]benzofuran-1,9'-xanthen]-3-one
- 分子式
- C20H12O5
- 分子量
- 332.311 g/mol
实测物性
- 性状
- Fluorescein appears as yellow amorphous solid or orange-red crystals. Latter have greenish-yellow fluorescence by reflected light. Insoluble in water. Soluble in dilute aqueous bases. Very dilute alkaline solutions exhibit intense, greenish-yellow fluorescence by reflected light. Low toxicity. May be sensitive to prolonged exposure to light. · Yellowish-red to red solid, [Merck Index] Orange powder, [MSDSonline]
- 熔点
- Decomposes at 554 °F. In sealed tube, melts at 597-601 °F with decomposition (NTP, 1992) · 315 dec °C
- 溶解性
- Insoluble (NTP, 1992) · 600 mg/mL (sodium salt)
- 分子量
- 332.34
这是对物质本身测得的数值。韩国安全保健公团（KOSHA）的资料仅供编写和审核安全数据表参考，并非原料商品的规格。
来源: PubChem · 韩国安全保健公团 安全数据表