Item	Specifications
	1st grade	Qualified
Appearance	Brown oily liquid or solid
Freezing Point , °C Min.	20.0	19.0
Heat Loss,% Max.	0.40	0.50
Ash, % Max.	0.20	0.50

Brown oily liquid, it is solid under 20 °C. Relative desity is 1.05～1.10 g/cm³ . soluble in most of organic solvent, insoluble in water.
A fast curing accelerator and vulcanization agent for natural rubber, synthesize rubber. Available sulfur is 7.5%. Combination with ETU use in W style CR for delay the curing. Combination with Lead dipentyldithiocarbamate in EPDM. TBTD is non blooming and non staining, can use for tire, shoe sole, industrial products. TBTD is regulated for use in articles in contact with food as specified under FDA 21 CFR177.2600, 175.105 and under BgVV XXI, Categories 1-4.