Overview
Chrome tanning agent, or chromium salt, is a fundamental chemical in the leather industry, primarily used to convert raw hides into durable leather. It is valued for its efficiency and ability to produce soft, high-quality leather. The most common form is basic chromium sulfate (BCS), which offers excellent tanning properties. The use of chromium salts in tanning dates back to the 19th century, revolutionizing the leather industry by significantly reducing processing time compared to traditional vegetable tanning methods. Today, it remains the dominant tanning agent globally, particularly for producing lightweight and pliable leather used in footwear, apparel, and upholstery.
Physical and Chemical Properties
Chrome tanning agent typically appears as a green powder or granular substance, soluble in water, with a density of around 1.7-1.8 g/cm³. Its molecular formula, Cr(OH)SO4, reflects its composition of chromium, hydroxide, and sulfate ions, which are critical for the tanning process. The chemical's effectiveness lies in its ability to form stable complexes with collagen fibers in hides, preventing decomposition and imparting desirable properties like heat resistance and flexibility. However, its solubility and reactivity also necessitate careful handling to avoid environmental contamination and health risks.
Main Applications
The primary application of chrome tanning agent is in the leather industry, where it is used to process hides into finished leather products. It is especially favored for producing soft, lightweight leathers, such as those used in high-end shoes, gloves, and fashion accessories. Beyond traditional leather tanning, chromium salts are also employed in some niche applications, including dyeing and finishing processes. Their ability to stabilize collagen makes them indispensable for achieving the desired texture and durability in leather goods, though environmental concerns have spurred research into alternative tanning methods.
Safety and Storage
Chrome tanning agents are classified as hazardous due to their toxicity and corrosiveness. Proper storage involves keeping the material in a cool, dry, and well-ventilated area, away from oxidizing agents and acids. Containers must be tightly sealed to prevent moisture absorption and contamination. Workers handling chromium salts must use personal protective equipment (PPE), including gloves, goggles, and respirators, to avoid skin contact, inhalation, or ingestion. Disposal must comply with local environmental regulations to prevent chromium pollution, which can have severe ecological and health impacts.
B2B Procurement Guide
When procuring chrome tanning agents, B2B buyers should prioritize suppliers with certifications for environmental and safety compliance, such as ISO 14001. Key specifications to verify include chromium oxide content (typically 24-26%) and solubility to ensure consistent performance in tanning processes. Price fluctuations are common due to chromium ore availability and regulatory changes. Buyers should also consider logistics, as transportation of hazardous materials may require special permits. Establishing long-term contracts with reliable suppliers can mitigate supply chain risks and ensure consistent quality.
Related Manufacturers
- 主营：香精香料、有机中间体、化工助剂
- 主营：氯化钠、除味剂、聚乙烯胺、铬盐精、二羟醋酸、肌氨基酸、聚乙烯铵、米诺地尔、醋酸亚铁、一水肌酸、树苔浸膏、2-丁二醇、纳米勃姆石、花椒油树脂、醋酸氯己定、糊状叶绿素、无味子醇甲、三硬脂酸铝、聚乙烯亚胺、胡椒基丁醚、全氟三丁胺、5-甲氧基色胺、聚酰亚胺树脂、人造康酿克油、有机硅季铵盐、氯化十六吡啶
- 主营：甘氨酸、甘氨酰、胰酵素、蒽甲酯、喹烯酮、黄蒿油、十五醛、碳酸镧、酰氨酸、芹菜酮、赖氨酸、980卡波、香气醇、百部酮、海蓝腈、高哌嗪、氯戊烷、苯二甲、姜黄素、三氮唑、雌三醇、溴氯苯、橙花素、纯吲哚、抗氧剂
- 主营：柠檬酸铵、无水醋酸钠、醋酸锌、醋酸铵、醋酸镁、醋酸钾、醋酸钙、醋酸锰、双乙酸钠、丙二酸、丁二酸、咪唑、二甲基咪唑、苯骈三氮唑、甲基苯骈三氮唑、水杨酸钠、溴化钾、溴化钠、溴化铵、甘氨酸、碳酸铜、羟基乙叉二膦酸、羟基乙叉二膦酸二钠、羟基乙叉二膦酸四钠、碱式硫酸铬
- 主营：蒸馏水、50%双氧水、柠檬酸钠、精间苯二甲酸、N-甲基吡咯烷酮、呋喃、二甲基亚砜、纯碱、丙二醇丙醚、片碱、冰醋酸、磷酸、正丁醇、异丙醇、己二酸、二甲基甲酰胺、二甲基乙酰胺、甘油、四氯呋喃、环氧氯丙烷
- 主营：化工中间体、有机中间体、添加剂、香精香料、表面活性剂、天然/合成树脂、分析试剂、日化原料、催化剂、高分子材料
- 主营：磷酸三钙、钡玻璃粉、锶玻璃粉、虫胶粉/精制紫胶、生物活性玻璃、全氟三丁胺、卡波姆树脂、月桂酰赖氨酸、木瓜蛋白酶、低温玻璃粉、磺化栲胶、聚酰亚胺pi树脂微粉、八甘醇、羟基磷灰石、高取代羟丙基纤维素、异戊橡胶、杜仲胶、二水硫酸钙、壳聚糖、氢化卵磷脂、辛烯基琥珀酸淀粉钠、花椒麻素、甲氧基聚乙二醇丙烯酸、维生素A棕榈酸酯、水解胶原蛋白锌
- 主营：黄丹粉、除漆剂、红丹粉、除锈剂、脱塑剂、黄血盐钾、无水氟化钾、磷酸三丁酯、硅磷晶、硫氰酸钠
- 主营：乳化剂、催化剂、烯丙基缩水甘油醚、间苯二甲胺、航空煤油、六甲基二硅氮烷、硅酸乙酯、月桂酰肌氨酸钠、安息香乙醚、光引发剂BP、二苯甲酮、硫氰酸亚铜、四甲氧基硅烷、异佛尔酮二异氰酸酯
- 主营：捕收剂、浮选剂、硫化矿、铬盐精、萃取剂、液体松香、稀土镍钴、苯氧肟酸、苄基胂酸、水杨羟肟酸、氧化石蜡皂、丁基钠黄药、磷酸二异辛酯、金属氧化矿物、乙二胺磷酸盐、硫铁矿的抑制剂、冶金行业螯合剂、医药中间体