Chemical Additives

Chemical Name: Dibenzothiazole disulfide

CAS NO.: 120-78-5

Product Specification:

Appearance		Grayish white to yellowish powder or particle
Purity,%	≥	95.0
Melting Point(Initial),°C	≥	164.0
Heat Loss,%	≤	0.40
Ash,%	≤	0.50
Residue on sieve(150μm),%	≤	0.10
Free MBT,%	≤	1.0

◆  Performance: Siceler MBTS is a thiazole accelerator with significant delayed action, with high vulcanization temperature and high safe processing. The vulcanization speed is relatively slow if used alone, and is usually combined with dithiocarbamates, thiuram, aldehyde amines and guanidine accelerators.

◆  Application: Siceler MBTS is used as a universal accelerator for natural rubber, synthetic rubber and reclaimed rubber, and can be used for manufacturing tires, rubber tubes, rubber belt and general industrial rubber products.

◆  Packaging: Paper/plastic packages with a net weight of 20kg per package.Or FIBC with a net weight 500kg per package.

◆  Transportation Condition: Clear vehicle with ceiling, avoiding sunshine, rain and long-term extrusion，keeping away from hot source.

120-78-5 – Names and Identifiers

Name	Accelerator (DM)
Synonyms	DM MBTS acceltm Accel TM AcceleratorDM Acelerator DM benzothiazolyl AcceleratorMBTS accelerator(dm) Accelerator (DM) Accelerator MBTS Benzothiazyldisuflide Rubber Accelerator DM benzothiazoledisulfide Rubber Accelerator MBTS Benzothiazole disulfide 2-benzothiazyldisulfide Dibenzothiazole Disulfide 2,2′-dithiobis-benzothiazol Benzothiazol-2-yl disulfide 2,2′-Dithiobis(Benzothiazole) 2,2′-Dibenzothiazoledisulfide 2,2-D ibenzothiazole Disulfide 2,2′-Dibenzothiazole disulfide Benzothiazole, 2,2′-dithiobis- 2-mercaptobenzothiazyldisulfide 1,3-benzothiazole 1,1-disulfide 2-mercaptobenzothiazoledisulfide 2-Mercaptobenzothiazyl disulfide 2,2′-bis(benzothiazolyl)disulfide 2-Mercaptobenzothiazole disulfide 2,2′-disulfanediylbis(1,3-benzothiazole) Rubber Pharmaceutical intermediate Refined(DM) 2-(1,3-Benzothiazol-2-yldisulfanyl)-1,3-benzothiazole
CAS	120-78-5
EINECS	204-424-9
InChI	InChI=1/C14H8N2S4/c1-3-7-11-9(5-1)15-13(17-11)19-20-14-16-10-6-2-4-8-12(10)18-14/h1-8H

120-78-5 – Physico-chemical Properties

Molecular Formula	C14H8N2S4
Molar Mass	332.49
Density	1.467g/cm3
Melting Point	177-180℃
Boling Point	358.898°C at 760 mmHg
Flash Point	170.855°C
Water Solubility	<0.01 g/100 mL at 21℃
Vapor Presure	0mmHg at 25°C
Appearance	Crystallization
Storage Condition	2-8℃
Sensitive	Easily absorbing moisture
Refractive Index	1.752
MDL	MFCD00022874
Physical and Chemical Properties	Density 1.5 melting point 177-180°C flash point 271°C water-soluble <0.01g/100 mL at 21°C
Use	It is used as a universal accelerator for natural rubber, synthetic rubber and reclaimed rubber. It is mainly used in the manufacture of tires, inner tube, adhesive tape, rubber shoes and general industrial products. High purity DM (pharmaceutical grade) is an important pharmaceutical intermediate for the manufacture of cephalosporins.

120-78-5 – Risk and Safety

Hazard Symbols	Xi – Irritant N – Dangerous for the environment
Risk Codes	R31 – Contact with acids liberates toxic gas R43 – May cause sensitization by skin contact R50/53 – Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description	S36/37 – Wear suitable protective clothing and gloves. S60 – This material and its container must be disposed of as hazardous waste. S61 – Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs	UN 3077

120-78-5 – Upstream Downstream Industry

Raw Materials

Aniline Sodium hypochlorite 2-Mercaptobenzothiazole Carbon disulfide Toluene Sulfur(α) Sulfuric acid Chlorine Sodium hydroxide Sodium nitrite Ammonia

120-78-5 – Introduction

Bitter, non-toxic, insoluble in water. Soluble in alcohol, ether, etc.

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