Himadri RG 535

1. Corporate office: Ruby House. 8, India Exchange Place, 2nd Floor, Kolkata 700 001, West Bengal, India
Tel: +91 33 2230‐4363/9953 | E‐mail: carbonblack@himadri.com
PRODUCT BROCHURE
KOHLENSTOFF® Carbon Blacks
KLAREX RG 535 Lead Competitor 1 Lead Competitor 2 Lead Competitor 3
Mooney Viscosity ASTM D1646 MU 31 30 33 32
Hardness ASTM D2240 sh‐A 70 69 69 70
100% Modulus MPa 4.5 4.1 4.0 4.8
Tensile Strength MPa 13.2 12.2 12.1 13.5
Elongation @ Break % 331 343 382 365
Compound Physical Properties
ASTM D412
Formulation ‐ EPDM 100, CB 130, Paraffinic Oil ‐ 70, Sulfur Cured System
KLAREX RG 535 Speciality Carbon Black
Mechanical Rubber Goods (MRG) Black
KLAREX RG 535 has an extremely low surface
area with a medium‐high structure. The
optimized and unique morphology of the
carbon black has been especially developed to
reduce visual imperfections on the surfaces of
extruded rubber parts and to assure high
electrical resistivity requirements. The high
electrical resistivity specifications can be
fulfilled at relatively high carbon black
loadings and without high white filler levels
that can be detrimental for extrusion,
processing and physical compound properties.
Carbon Black
Physical Properties
Test Method Typical Value
I₂ No. (g/kg) ASTM D1510 22
OAN (cc/100g) ASTM D2414 94
Tint (%) ASTM D3265 40
S.R. #325 (ppm) ASTM D1514 ≤25
Moisture (as packed) (%) ASTM D1509 <1
Ash (%) ASTM D1506 0.2

2. Product Highlights
Corporate office: Ruby House. 8, India Exchange Place, 2nd Floor, Kolkata 700 001, West Bengal, India
Tel: +91 33 2230‐4363/9953 | E‐mail: carbonblack@himadri.com
HIMADRI’S KLAREX RG 535 speciality carbon black
provides the following competitive advantages:
• High green strength, excellent extrusion
characteristics & low hysteresis
• Excellent dispersion
• High electrical resistivity.
• Very low surface defects
• Low gloss (matt surface)
Key Applications
• Automotive weather stripping and extruded
profiles
• Anti‐vibration and automotive belt application
• Automotive coolant, industrial and consumer
hoses.
Product Form & Logistics
• Product Form: Pellets
• Regional Availability: Global
• Bag Packaging Options: 25 kg polyethylene lined paper bags
• Bulk Packaging options: Flexible intermediate bulk containers (FIBC) depending on region
0
10
20
30
40
50
150 ‐ 200 μ m 200 ‐ 500 μ m > 500 μ m
Tape Defect Count
KLAREX RG 535 Lead Competitor 1
Lead Competitor 2 Lead Competitor 3
1.E+00
1.E+03
1.E+06
1.E+09
1.E+12
10% 20% 30% 40% 50%
Volume Resistivity (ohm.cm)
Carbon Black Loading (%)
50‐50 EVA / LLDPE Base
KLAREX RG 535
Lead Competitor 1
Lead Competitor 3