PILCURE ZBZDC

Overview
Compounding Information

Chemical Name	Zinc dibenzyldithiocarbamate. (ZBEC)
Chemical Structure
CAS Reg. No.	14727-36-4
Mol. Wt.	610
Product Specification
Parameter	Limits		Test Method
Product form	Powder	Powder (OT)	-
Color	White-Off white	White-Off white	-
Assay ,% (min)	97.0	96.0	NOCIL G 49
Melting Point, initial, °C (min)	178	178	D 1519
Melting point , final , °C (min)	180	180	D 1519
Heat Loss, % (max)	0.4	0.4	D 4571
Water Solubles, % (max)	0.5	0.5	NOCIL 02-3-332
Zn Content, % (max)	10.0-11.5	10.0-11.5	NOCIL 02-3-323
Paraffinic Oil (<0.2% PCAH), %		1.0-2.0	NOCIL G 40
Residue on 150 µm sieve, % (max)	Nil	Nil	D 5461
Residue on 63 µm sieve, % (max)	0.3	0.3	D 5461
Typical Data
Specific gravity at 25°C	1.40		D 1817
Bulk density , kg/m3	300 - 340		NOCIL G-44
Bulk density (Comp), kg/m3	420 - 460		NOCIL G-44
Product Information
Solubility	Moderate Solubility in acetone & chlorinated solvents. Insoluble in aliphatic hydrocarbons and water.
Classification	Ultra fast accelerator.
Discoloration & Staining	Non-discoloring and Non-staining.
FDA Approval Status	Regulated for use in articles in contact with food under FDA 21 CFR 175.105, 177.2600 & under BgVV XXI, Category1-4, and ‘Sonderkategorie’.
Toxicity Data (Please refer to the latest Toxicological information.)	Not harmful by mouth. (Oral LD50rat over 16000 mg/kg). May cause eye / skin irritation.
Handling & Personal Protection	Ensure good ventilation and avoid creating dusty atmosphere. In case of eye or skin contacts wash out with clean water for 5 to 10 minutes.
Storage	Always store in a cool (below 35ºC) & dry place in single stack pallets away from direct sun light or any other heat source to avoid grit formation.
Packaging
Paper-Fabric Bag	20 kg
FIBC	500 kg
Storage Life	24 months when stored as stated above.
Color code	None

Pilcure ZBzDC is mainly used as a ‘nitrosamine free’ ultra fast accelerator since it is based on dibenzyl amine and forms N-nitrosodibenzyl amine on vulcanization which is not carcinogenic according to the published literature.

Pilcure ZBzDC is used as primary as well as secondary accelerator in latex and dry rubber based compounds for specialty applications (e.g. nitrosamine free products, products for food contact applications etc.).

The dosage of Pilcure ZBzDC is generally 70% higher than ZDEC and 30% higher than ZDBC to achieve equivalent state of cure since its molecular weight is higher.

Pilcure ZBzDC is effective in the presence of Zinc oxide and Stearic acid as activators of cure in dry rubber compounds. Similarly, presence of Zinc oxide is necessary in latex based compounds.

Pilcure ZBzDC disperses easily in latex as well as dry rubber based compounds and does not decompose in the absence of sulphur.

Pilcure ZBzDC can be activated by basic accelerators but retardation is difficult. Vulcanization temperatures below 135ºC are recommended for better reversion resistance.

Pilcure ZBzDC offers better processing safety as compared to other dithiocarbamate accelerators. However; necessary precautions similar to other ultra fast accelerators should be taken to avoid premature vulcanization and improved storage stability of uncured stocks.

TYPICAL DOSAGES:

Typical dosages of Pilcure ZBzDC based cure systems are given below:

TYPICAL DOSAGES OF PILCURE ZBzDC
Product	Rubber	Accelerator / Sulfur , phr
Product	Rubber	ZBzDC	MBTS	ZMBT	DPG	S
As primary accelerator	NR SBR/NBR	1.0-1.5 1.5-1.8	- -	- -	0.5-0.8 0.8-1.0	1.8-2.0 1.5-2.0
As secondary accelerator	NR SBR/NBR	0.2-0.5 0.3-0.5	0.8-1.2 1.0-1.5	- -	- -	2.0-2.5 1.5-2.2
Food Contact products	NR	0.5-1.0	-	-	0-0.20	2.0-2.4
Sports goods	NR	1.0-1.3	-	-	0- 0.5	1.8-2.0
Proofing materials	NR SBR/NBR	1.0-1.5 1.5-2.0	- -	- -	0-0.5 0-0.5	2.0 1.5-2.0
Extruded Products	EPDM	1.0-2.0	1.5	-	0.8-1.2	1.5-2.0
Latex Products
Dipped Goods	NR SBR/NBR	1.0-2.0 1.5-2.5	- -	- -	0.5-1.0 0.5-1.0	1.5-2.0 2.5-2.8
Foamed Products	NR	1.5-2.0	-	0.3-0.5	-	2.0

Awards / Certifications