Dibenzothiazole disulfide

Description

Rubber accelerator · CAS 120-78-5 · C14H8N2S4. UNII 6OK753033Z. Melting Point: 334 °F (NTP, 1992); Melting Point: 180 °C; Flash Point: 518 °F (NTP, 1992).

Identification

CAS Registry Number	120-78-5
PubChem CID	8447
Molecular formula	C14H8N2S4
IUPAC name	2-(1,3-benzothiazol-2-yldisulfanyl)-1,3-benzothiazole
UNII (FDA)	6OK753033Z

Computed Descriptors

Molecular Weight	332.5
XLogP3	5.6
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	3
Exact Mass	331.95703296
Monoisotopic Mass	331.95703296
Topological Polar Surface Area	133
Heavy Atom Count	20
Formal Charge	0

Physical & Chemical Properties

Melting Point	334 °F (NTP, 1992)
Melting Point	180 °C
Flash Point	518 °F (NTP, 1992)
Flash Point	257 °C
Solubility	In water, <10mg/L
Density	1.50
Density	Density (at 20 °C): 1.5 g/cm³
LogP	4.5

Physical description & handling notes

• 2,2'-dithiobisbenzothiazole is a cream to light yellow powder. (NTP, 1992)
• Dry Powder; Large Crystals; Large Crystals; Wet Solid; Other Solid; Dry Powder
• Pale yellow or cream to off-white odorless solid; [HSDB] Colorless to pale yellow powder; [MSDSonline]
• YELLOW POWDER WITH CHARACTERISTIC ODOUR.
• PALE YELLOW NEEDLES FROM BENZENE
• FREE-FLOWING POWDER

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS 2,2'-DITHIOBIS(BENZOTHIAZOLE)

GHS Hazard Classification

Reported hazard statements	H317, H400, H410

Documented Uses

• Used as rubber accelerator, polychloroprene plasticizer/retarder, and neoprene retarder; Also used for general mechanicals and white stocks; [HSDB] Used as cure modifier for neoprene type W and as oxidation cure activator in butyl; Used for extruded and molded products, tires, tubes, wire, cable, and sponge; [Hawley] Workers may be exposed in metals, home, health, laboratory, and building industries; [Kanerva, p. 1779]
• Metal Machining [Category: Heat or Machine]
• Working with Glues and Adhesives [Category: Other]
• Using Disinfectants or Biocides [Category: Clean]
• Plastic Composites Manufacturing [Category: Industry]
• Photographic Processing [Category: Other]

Synonyms

120-78-5; 2,2'-Dithiobisbenzothiazole; MBTS; Benzothiazole disulfide; Dibenzothiazolyl disulfide; Vulkacit DM; Pneumax DM; Vulcafor MBTS; 2,2'-DIBENZOTHIAZYL DISULFIDE; Benzothiazolyl disulfide; Bis(2-benzothiazyl) disulfide; Ekagom GS; Dibenzoylthiazyl disulfide; Accel TM; Vulkacit DM/C; Bis(benzothiazolyl) disulfide

Frequently Asked Questions

What are the CAS number and molecular formula of Rubber accelerator?

CAS 120-78-5; molecular formula C14H8N2S4; molecular weight — g/mol.

What other names is Rubber accelerator known by?

120-78-5, 2,2'-Dithiobisbenzothiazole, MBTS, Benzothiazole disulfide, Dibenzothiazolyl disulfide, Vulkacit DM.

What is the regulatory status of Rubber accelerator?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; 2,2'-DITHIOBIS(BENZOTHIAZOLE).

Is Rubber accelerator classified as hazardous?

Hazard statements reported: H317, H400, H410.

What are the key physical properties of Rubber accelerator?

Melting Point: 334 °F (NTP, 1992); Melting Point: 180 °C; Flash Point: 518 °F (NTP, 1992); Flash Point: 257 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.