"1-K Kerosene" means a special low-sulfur grade kerosene suitable for use in non-flue connected kerosene burner appliances, and in wick-fed illuminate lamps which has a maximum limit of.04% sulfur mass, and a freezing point of -22 degrees Fahrenheit, and has a minimum saybolt color of +16. For purposes of this Law, 1-K Kerosene includes 1-K Kerosene that has been dyed in accordance with Section 4d of this Law.
35 ILCS 505/1.13A