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Industrial Rubber Properties Chart 

Typical Properties 


PPG Silica Product		 N2 Surface
 Area, BET-5
(m2/g) 

N2 Surface
 Area, BET-1
(m2/g) 

pH 

Residual
Salt Type 

Physical
Form

Reinforcement 

 
Silene™ 732D   33

35 

8.5

Na2SO4 

 Powder

Semi-Reinforcing 

Hi-Sil™ 532EP   55

60 

8

Na2SO4 

 Powder

Semi-Reinforcing

Hi-Sil™ 315-D   125

N/A 

7

Na2SO4 

 Powder

Reinforcing

Hi-Sil™ 315G-D 125

N/A 

7

Na2SO4 

 Granule

Reinforcing 

Hi-Sil™ 210   135

150 

7

NaCl 

 Pellet

Reinforcing 

Hi-Sil™ 233   135

150 

7

NaCl 

 Powder

Reinforcing 

Hi-Sil™ 243LD   135

150 

7

NaCl 

 Granule

Reinforcing 

Hi-Sil™ 900   135

150 

7

Na2SO4

 Powder

Reinforcing 

Hi-Sil™ 135 150

170

7

Na2SO4

 Powder

Highly-Reinforcing 

Hi-Sil™ EZ 160G-D 160

170

7

Na2SO4

 Micro-Granule 

Highly-Reinforcing

Hi-Sil™ HDP-320G 160

N/A

7

Na2SO4

 Micro-Granule

Highly-Reinforcing

Hi-Sil™ 134G   180

200

7

Na2SO4 

 Powder

Highly-Reinforcing  

Hi-Sil™ 132 180

200

7

Na2SO4  

 Micro-Granule

Highly-Reinforcing  

Hi-Sil™ 190G   195

215

6.5

Na2SO4

 Powder

Highly-Reinforcing  

Hi-Sil™ 915 195

215

7

Low Na2SO4

 Granule

Highly-Reinforcing

Ciptane™ I 135

150 

7

Na2SO4 

 Pellet 

Reinforcing,
3% Mercapto-Silane 

Ciptane™ LP 170

N/A 

7

Na2SO4  

 Bead 

Reinforcing,
2.5% Mercapto-Silane