2019年3月21日14:48左右，江苏省盐城市响水县陈家港镇生态化工园区内的江苏天嘉宜化工有限公司发生爆炸。

正赴国外访问途中的中共中央总书记、国家主席、中央军委主席习近平对江苏响水天嘉宜化工有限公司“3·21”爆炸事故作出重要指示：

Xi said all-out efforts must be made to search those trapped, and the injured must be timely treated and relief work must be well done to maintain social stability. Meanwhile, environment monitoring and early warning should be strengthened to prevent environmental pollution as well as secondary disasters.
要求全力抢险救援，搜救被困人员，及时救治伤员，做好善后工作，切实维护社会稳定。要加强监测预警，防控发生环境污染，严防发生次生灾害。

The Tianjiayi chemical plant, which was established in 2007, is a producer of over 30 organic chemical compounds, including anisole, m-Phenylenediamine and para-Phenylenediamine, many of which are flammable and toxic, according to its website.
官网信息显示，天嘉宜成立于2007年，主要生产苯甲醚、间苯二胺以及对间苯二胺等30多种有机化合物，其中很多化合物为易燃有毒产品。

According to the city's environmental protection authority, the explosion had a negative influence on the air quality in the chemical park and its surrounding areas within a 500-meter radius. 
当地环保部门表示，爆炸会对化工厂及周边500米范围地区的空气质量产生不良影响。

No residents are living in the chemical park, while all people nearby have been evacuated. And there are no drinking water sources downstream of the accident site, it added.
环保部门同时表示，化工厂内没有人居住，周边居民也已被撤离。爆发事故地点下游也没有饮用水源。

The company had been ordered by State Administration of Work Safety Ministry, the predecessor of Ministry of Emergency Management, to rectify its 13 hidden safety hazards in 2018, including leaking valve on its storage tank.
2018年，原国家安监总局，应急管理部前身，曾要求天嘉宜整改储存罐阀门泄漏等13条安全隐患。

在国家安全监督总局办公厅的官网上，涉事的企业有13项安全隐患被通报，其中有4项直接涉及到苯；尤其有一条是，苯、甲醇装卸现场无防泄漏应急处置措施，这可能是造成可燃物泄漏并爆炸的主要原因之一。

And earlier in 2016, the company was fined by the county's ecological and environmental protection bureau for violating the solid waste management and environmental impact assessment regulations. It was punished again a year later for disobeying air pollution and solid waste management regulations in 2017, according to Qichacha, a data bank that tracks business registration information in China.
企业登记信息数据库企查查信息显示，早在2016年，天嘉宜就曾因为违法固体废物管理及环境影响测评规定被前国家环保总局罚款。2017年，该公司又因为违法空气污染及固体废物管理规定被处罚。