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              1. 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

                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

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