Overview
Dibutyl Sebacate (DBS) is an organic compound classified as a dibasic acid ester, derived from sebacic acid and n-butanol. It serves as a specialty plasticizer with superior low-temperature performance compared to common phthalate alternatives. First commercialized in the mid-20th century, DBS gained prominence for its combination of thermal stability and flexibility enhancement in polymer systems. The ester is manufactured through esterification of sebacic acid with butanol under acidic catalysis, followed by purification. Its linear molecular structure contributes to exceptional compatibility with polar resins, making it particularly valuable in flexible PVC formulations for cold-resistant applications such as automotive interiors and wire insulation.
Physical and Chemical Properties
As a medium-molecular-weight diester, DBS exhibits characteristic properties ideal for plasticizer applications. The liquid has a faint ester odor and demonstrates low viscosity (9.8 cP at 25°C), facilitating easy handling during polymer processing. Its freezing point of -10°C ensures performance in subzero environments, while the high boiling point provides thermal stability during extrusion or molding operations. Chemically, DBS shows remarkable resistance to hydrolysis compared to shorter-chain esters, though prolonged exposure to moisture at elevated temperatures should be avoided. The compound's refractive index (1.442 at 20°C) and dielectric constant (4.2 at 1kHz) make it suitable for certain electronic applications. Its evaporation loss (0.23% after 24h at 100°C) is significantly lower than many competing plasticizers.
Main Applications
In industrial practice, approximately 70% of DBS production is consumed by the plastics industry as a primary or secondary plasticizer. It imparts exceptional low-temperature flexibility (-40°C) to PVC compounds used in automotive interior trim, refrigerator gaskets, and cold-climate construction membranes. The compound's UV stability makes it valuable for outdoor applications where plasticizer migration must be minimized. Beyond plastics, DBS serves as a lubricant base stock in specialty greases and as a carrier fluid in cosmetic formulations. The personal care industry utilizes its emollient properties in lotions and makeup products. Emerging applications include use as a solvent for ink formulations and as a processing aid in synthetic rubber production, where it improves filler dispersion.
Safety and Storage
DBS is classified as a Category 4 acute toxicity hazard (harmful if swallowed) under GHS standards, requiring proper handling procedures. While not considered a severe skin irritant, prolonged contact may cause mild dermatitis in sensitive individuals. Adequate ventilation (general or local exhaust) should be maintained when handling heated material to prevent vapor accumulation. Storage recommendations include using corrosion-resistant containers (stainless steel or polyethylene) and maintaining temperatures below 40°C. The material is stable under normal conditions but may decompose at temperatures above 200°C, releasing butanol and sebacic acid derivatives. Firefighting measures for bulk quantities should employ alcohol-resistant foam due to the compound's limited water solubility.
B2B Procurement Guide
Industrial buyers should specify technical grade DBS (typically ≥99% purity) with acid value <0.1 mg KOH/g and moisture content <0.1%. For critical applications like medical devices or food contact materials, request USP/EP grade certification. Bulk shipments (ISO tanks or 200kg drums) typically offer 10-15% cost savings compared to smaller packaging. Supplier evaluation should include verification of ISO 9001 certification and batch traceability systems. Given the compound's sensitivity to oxidation during long-term storage, request recent production dates and conduct incoming QC checks for peroxide value and color stability. Consider dual sourcing strategies as production is concentrated in a limited number of global manufacturers.
Related Manufacturers
- 主营：癸二酸二丁酯、碳酸丙烯酯、乙二醇二醋酸酯、油漆油墨稀释剂
- 主营：增塑洗涤剂、间二甲苯、乳化剂、癸二酸二丁酯、防冻液、丙二醇、三甲苯、苯乙烯、溶剂油、钛酸四丁酯、甲醇、乙醇、仲辛醇、异丙醇、85磷酸、碳酸丙烯酯、甲基丙烯酸、丙烯酸羟乙酯、二甲苯、脂肪酸甲酯、甲酸、氨水、丙烯酸、草酸、聚乙二醇
- 主营：二氧化硒、对甲苯磺酸、黄血盐钠、癸甲溴铵、癸甲氯铵、黄血盐钾、苯甲酸、环烷酸、戊二醛、磺化钛氰钴、盐酸羟胺、过氧化苯甲酰、衣康酸、聚丙烯酸酯乳液、4丁炔二醇、马日夫盐、氟硅酸镁、聚乙烯吡咯烷酮k30、磷酸三丁酯、聚六亚甲基双胍、黄丹粉、红丹粉、牛肉浸膏、HEDP
- 主营：120号溶剂油、航空煤油、异构十二烷、癸二酸二丁酯、260号溶剂油、二氯甲烷、三氯乙烯、四氯乙烯、正十四烷、甲基丙烯酸缩水甘油酯、丙烯酸、碳酸二甲酯、60号全精炼石蜡、顺酐、苯酐、80号微晶蜡、甲基苯骈三氮唑、甲基丙烯酸、二月桂酸二丁基锡、精萘、硫脲、二茂铁、莫卡、邻苯二甲酸二辛酯、抗氧剂BHT501、亚磷酸
- 主营：甲基磺酸、乙醇钠、盐酸胍、癸二酸丁二酯、对氯苯甲酸、丙酸乙酯、乙二醛、正丁醚、十二烷基苯、对二氯苯、硫醇、多聚磷酸、戊二醛、二氯甲烷、碳酸钾、双氰胺、偶氮二异丁腈、正己醇、乙腈、二氧六环、水杨醛、对甲酚、吗啉、咪唑、四甲基乙二胺
- 主营：聚氯乙烯糊树脂、三乙醇胺硼酸酯、甘油、癸二酸二丁酯、二辛酯、氯化石蜡、渗透剂、乳化剂、油酸、氢氧化铝、二丁酯、二甲基硅油、蓖麻油、废油凝固剂、氢化蓖麻油、十二羟基硬脂酸、太古油、三乙醇胺油酸皂、石蜡、十二烷基三甲基氯化铵、偏铝酸钠、环氧大豆油、妥尔油
- 主营：溶剂油、正丁醇、乙酸乙酯、癸二酸二丁酯、无水乙醇、120号溶剂油、150号溶剂油、D40溶剂油、D60后溶剂油、航空煤油、异丙醇、醋酸甲酯、二甲基甲酰胺、二甲苯、苯乙烯、二氯甲烷、二氯乙烷、甲醇、氯化橡胶、过氯乙烯树脂、苯酚、环己酮、硝酸铜、硝酸铁、硝酸铝、D80溶剂油
- 主营：癸二酸二丁酯、防冻液、脱漆剂、二甲基甲酰胺
- 主营：太古油、蓖麻油、环氧大豆油、癸二酸二丁酯、氢化蓖麻油、三乙醇胺、妥尔油、妥尔油脂肪酸、硬脂酸、聚氯乙烯糊树脂、偏铝酸钠、二甲基硅油、阻燃剂、磷酸三乙酯、乳化硅油、蓖麻油酸、渗透剂、分散剂、石油磺酸钠、十二羟基硬脂酸、1231、氯化石蜡、硼酸、废油凝固剂、HEDP
- 主营：二十醇、钒酸酐、键合剂、正癸醇、新癸酸、环戊酮、甲醇钾、聚醚胺、正辛烷、三甲胺、二聚酸、双甲酮、戊二醇、异戊烷、清洗剂、磷酸酐、水合物、异戊醇、磷酸酯、异辛烷、氯化锌、化妆品、苯甲胺、水芹醛、正壬醇
- 主营：萃取剂、选矿药剂、金矿硫化矿
- 主营：分析纯ar、缩水甘油、翁江试剂、别名癸二酸双、氨基甲基、环氧乙烷、甲酸香叶、乙基碘化铵
- 主营：爱研试剂
- 主营：阻燃剂、钼酸铵、苯甲基、催化剂、钒酸铋、5108-96-3、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、6234-14-3、3982-82-9、异恶草、固化剂、甲酸钾、猪肝脏
- 主营：癸二酸双、化学试剂