Name: ZEMSIL FH-200D
Brand: ZEMSIL

Question 1

What is ZEMSIL FH-200D?

Accepted Answer

ZEMSIL FH-200D (Fumed Silica (Hydrophobic, DMDCS-treated), CAS 112945-52-5) is a ZEMSIL® silicone material. ZEMSIL FH-200D is a hydrophobic fumed silica produced by DMDCS treatment, equivalent to Aerosil R972. Dimethylsilyl surface groups confer strong hydrophobicity (methanol wettability ≥40%) and minimal moisture uptake. Used extensively in toner for flow and charge control, RTV silicone reinforcement, defoamer compositions, and hydrophobic coating systems.

Question 2

What is ZEMSIL FH-200D equivalent to?

Accepted Answer

ZEMSIL FH-200D is equivalent to Aerosil R972, CAB-O-SIL TS-530 and can be used as a direct drop-in replacement in most formulations.

Question 3

What are the main applications of ZEMSIL FH-200D?

Accepted Answer

ZEMSIL FH-200D is used in: Toner & Powder Coatings, Silicone RTV, Defoamers, Hydrophobic Coatings, Inks.

Question 4

What are the key specifications of ZEMSIL FH-200D?

Accepted Answer

BET Surface Area: ~110 m²/g; Surface Treatment: DMDCS; Carbon Content: ~0.7 %; Methanol Wettability: ≥40 %; Moisture (105°C, 2h): ≤0.5 %; pH (4% in methanol): 3.6–5.0

Question 5

What is the CAS number of ZEMSIL FH-200D?

Accepted Answer

The CAS number of ZEMSIL FH-200D (Fumed Silica (Hydrophobic, DMDCS-treated)) is 112945-52-5.

ZEMSIL FH-200D

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خاصیت	مقدار	واحد	روش آزمون
BET Surface Area	~110	m²/g	ISO 9277
Surface Treatment	DMDCS	—	—
Carbon Content	~0.7	%	—
Methanol Wettability	≥40	%	—
Moisture (105°C, 2h)	≤0.5	%	—
pH (4% in methanol)	3.6–5.0	—	—