Himadri RG 535

1. Unleashing the power of Carbon
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 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
Mooney
Viscosity
ASTM D1646 MU 31 30 33 32
Hardness
ASTM
D2240
sh-A 70 69 69 70
100% Modulus
ASTM D412
MPa 4.5 4.1 4.0 4.8
Tensile
Strength
MPa 13.2 12.2 12.1 13.5
Elongation at
Break
% 331 343 382 365
Compound Physical Properties KLAREX RG 535 Lead Competitor 1 Lead Competitor 2 Lead Competitor 3
Formulation EPDM 100, CB 130, Paraffinic Oil - 70, Sulphur Cured System

2. 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 Highlights
HIMADRI’S KLAREX RG 535 speciality carbon black
provides the following competitive advantages:
• High green strength, excellent extrusion
characteristics and low hysteresis
• Excellent dispersion
• High electrical resistivity.
• Very low surface defects
• Low gloss (matte 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