To neutralize the gas, about 500 kilograms (1,100 lb) of the antioxidant 4-tert-butylcatechol (PTBC) will be airlifted by the Government of Andhra Pradesh and sent to the crippled factory. The Central Government flew a specialized CBRN (chemical, biological, radiological and nuclear) team of the National Disaster Response Force (NDRF) from Pune to the site as well.[24][22]