Overview
Sudan I is a synthetic azo dye first developed in the late 19th century for industrial coloring purposes. It belongs to the Sudan dye family, characterized by bright red-orange hues and lipophilic properties. While historically used in textiles and plastics, its toxicity led to strict bans in food products worldwide. Due to its carcinogenic potential, regulatory agencies like the EU and FDA prohibit its use in consumables. However, it remains relevant in non-food industrial applications, such as coloring lubricants and waxes. B2B buyers must ensure compliance with regional regulations when sourcing this chemical.
Physical and Chemical Properties
Sudan I appears as a red-brown crystalline powder with a molecular weight of 248.28 g/mol. Its azo group (-N=N-) is responsible for its vibrant color and reactivity. The dye is highly soluble in organic solvents like ethanol and acetone but insoluble in water, making it suitable for non-polar matrices. The compound has a melting point of 131-133°C and degrades at higher temperatures. Its stability is affected by light and oxidizing agents, necessitating opaque, airtight storage. Analytical methods like HPLC and UV-Vis spectroscopy are commonly used to detect and quantify Sudan I in products.
Main Applications
Historically, Sudan I was used to color textiles, plastics, and shoe polishes. Today, its primary applications include industrial dyeing of solvents, motor oils, and waxes. It is also employed in laboratory settings as a staining agent for lipids in microscopy. Notably, its illicit use in food (e.g., chili powder) has caused scandals, prompting global bans. Legal industrial uses require strict documentation to prevent diversion. Alternatives like natural dyes are increasingly preferred in food-safe applications.
Safety and Storage
Sudan I is classified as a Category 3 carcinogen by the EU and poses risks upon prolonged exposure. Personal protective equipment (PPE), including nitrile gloves and respirators, is mandatory during handling. Spills should be contained with absorbent materials and disposed of as hazardous waste. Storage requires cool (<25°C), dry conditions in amber glass or HDPE containers. Incompatible with strong oxidizers, it must be segregated from reactive chemicals. Safety Data Sheets (SDS) must be reviewed prior to use, and local disposal regulations must be followed.
B2B Procurement Guide
When procuring Sudan I, prioritize suppliers with ISO 9001 or GMP certification to ensure quality and traceability. Request Certificates of Analysis (CoA) specifying purity (typically >95%) and impurity profiles. Batch-specific testing for heavy metals is advisable. Due to regulatory risks, confirm that the supplier complies with REACH or TSCA standards. MOQs often start at 1 kg, with bulk discounts available. Spot-check deliveries using third-party labs to verify composition. Consider alternatives like Sudan IV for less toxic options in permissible applications.
Related Manufacturers
- 主营：苯酚红、亚甲基蓝、生物染色剂、酚酞试剂、龙胆紫结晶紫甲基紫、碱式碳酸铅
- 主营：防冻液、柠檬酸、丙三醇、苏丹2号、蒸馏水、硝酸铜、指示剂、荧光素、洗涤剂、碳酸钠、氯化铵、维生素c、藏花红t、84消毒液、曙红伊红、甘油、乙酸锌、磷酸二氢铝、乙二醇
- 主营：木质醛、酮锌吡、褪黑素、甘油酯、粘蛋白、薄荷脑、苯氨基、苹果酸、三羟基、皮粉五、甲基蓝、生根粉、动力精、薄荷酮、二羟基、3α羟基、萘酰胺、胶粘剂、磷酸三、嗪二酮、氨酸钾、嘧啶酮、氨酸镁、407环氧、酸cas号
- 主营：凉味剂、聚苯胺、氨基多糖季胺盐、苏丹、五溴甲苯、2-氟丙烯酸甲酯、巯基丁醇、全氟三丁胺、酒石酸钾、硫代水杨酸
- 主营：涂料助剂、工业清洗剂、表面活性剂、苏丹Ⅲ、合成材料助剂、合成香料、溶剂、香精和香料中间、合成材料中间体、选矿药剂、萃取剂
- 主营：D-荧光素钾、D-荧光素钠、缓冲液、生化试剂盒、裂解液、脲酶Urease、刀豆凝集素ConA、黄嘌呤氧化酶、胰α淀粉酶、β-葡萄糖苷酶、辣根过氧化物酶、tRNA转运核糖核酸、胰蛋白酶抑制剂、乙酰胆碱酯酶、L-乳酸脱氢酶、过氧化氢酶、葡萄糖氧化酶、肝素钠、福林酚、三羟甲基氨基甲烷、二硫苏糖醇DTT、苏木色精、伊红Y(曙红)、乙基紫
- 主营：氯金酸、卡尔费休、乙醇、化学试剂、色谱试剂、异丙醇、药用辅料、依地酸钙钠、碳酸钠、盐酸氨丁三醇、龙胆酸、枸橼酸钠、甲醇、氢氧化钠、钴锰催化剂、硫酸锰、乙腈、助剂、指示剂、醋酸锰、醋酸钴、氨丁三醇、尿素、硼酸
- 主营：抗氧剂、乳化剂、苯扎氯铵、烷基二甲基、氢化蓖麻油、表面活性剂、双链季胺盐、聚氧乙烯醚、二丁基羟基甲苯、甘油聚氧丙烯醚、十二烷基硫酸钠、树脂、助剂
- 主营：细胞凋亡、蛋白提取、细胞增殖毒性检测、试剂盒、核蛋白提取、膜蛋白提取、外泌体提取、细胞器分离、细胞周期检测、细胞焦亡检测、植物蛋白提取
- 主营：巴氏吸管、离心管、透析袋、10ul吸头、国产试剂、琼脂糖
- 主营：无水乙醇、乙酸乙酯、磷酸、各种化学试剂、甲醇、乙二醇、二氯甲烷、异丙醇、二甲苯、化工原料
- 主营：化学试剂、网站建设、企业官网设计、网站搭建
- 主营：阻燃剂、钼酸铵、苯甲基、5108-96-3、6234-14-3、催化剂、钒酸铋、环丙腈、碳酸镝、钨酸铵、唑烷酮、化合物、氟苯基、乌头酸、溴化锂、脂肪酸、铝酸钴、萘甲醛、四苯基、蛋白酶、3982-82-9、异恶草、固化剂、甲酸钾、猪肝脏
- 主营：亚索化学试剂、化学试剂、生物试剂、检测试剂、化学色谱纯试剂、光谱纯试剂、分析纯AR试剂、优级纯GR试剂、基准试剂、高纯电子级试剂、标准化学试剂、滴定分析试剂、实验室试剂、通用试剂
- 主营：纤维素、硫酸盐、磷酸酯、苏丹Ⅳ、氯硅烷、聚磷酸、甘油酯、氟甲苯、异氰酸、化合物、二苯胺、催化剂、共聚物、水杨酸、苯甲醛、二苯基、浮石粉、二甲醇、烯丙基、甲磺酸、苯二胺、乙氧基、磺酸钠、分析纯、表面活性剂、染料原料
- 主营：甘氨酸、阻燃剂、硫酸锌、醛试剂、硫酸锆、硫酸锂、茄边碱、二乙烯、钒酸铋、硫酸锶、聚合物、氮化锆、肌氨酸、山梨糖、丙三酸、铝酸锌、嘧菌酯、磷酸铁、麝香酮、肉桂醛、磷酸铜、磷酸铝、赖氨酸、茜素紫、茜素红
- 主营：分析纯ar、缩水甘油、氨基甲基、翁江试剂、环氧乙烷、甲酸香叶、乙基碘化铵