Name: ZEMSIL PS-165
Brand: ZEMSIL

Question 1

What is ZEMSIL PS-165?

Accepted Answer

ZEMSIL PS-165 (Precipitated Silica (Tire Grade), CAS 7631-86-9) is a ZEMSIL® silicone material. ZEMSIL PS-165 is a highly dispersible precipitated silica for green tire compounds, equivalent to Zeosil 165GR and Ultrasil VN3. BET ~165 m²/g with high CTAB/BET ratio achieves superior dispersibility with silane coupling agents (ZEMSIL CS-69, CS-75). Delivers rolling resistance reduction meeting EU tire labeling regulations while maintaining wet grip.

Question 2

What is ZEMSIL PS-165 equivalent to?

Accepted Answer

ZEMSIL PS-165 is equivalent to Zeosil 165GR, Ultrasil VN3 and can be used as a direct drop-in replacement in most formulations.

Question 3

What are the main applications of ZEMSIL PS-165?

Accepted Answer

ZEMSIL PS-165 is used in: Green Tires, High-Performance Tires, Industrial Rubber.

Question 4

What are the key specifications of ZEMSIL PS-165?

Accepted Answer

BET Surface Area: 165 ± 15 m²/g; CTAB Surface Area: ~155 m²/g; SiO₂ Content (dry basis): ≥96 %; DBP Absorption: ~200 mL/100g; Moisture (105°C, 2h): ≤7 %; pH (5% suspension): 6.0–7.5

Question 5

What is the CAS number of ZEMSIL PS-165?

Accepted Answer

The CAS number of ZEMSIL PS-165 (Precipitated Silica (Tire Grade)) is 7631-86-9.

ZEMSIL PS-165

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خاصیت	مقدار	واحد	روش آزمون
BET Surface Area	165 ± 15	m²/g	ISO 9277
CTAB Surface Area	~155	m²/g	—
SiO₂ Content (dry basis)	≥96	%	—
DBP Absorption	~200	mL/100g	—
Moisture (105°C, 2h)	≤7	%	—
pH (5% suspension)	6.0–7.5	—	—