Hydrophobic Fumed Silica Hb-139 Superior Thixotropy Silicon Dioxide for Weatherability of Coatings

• Customization: Available
• CAS No.: 7631-86-9
• Formula: Sio2
• EINECS: 231-545-4
• Classification: Silicon Dioxide
• Grade Standard: Industrial Grade
• Kind: Acidic Oxide
• Quality: First Class
• Appearance: White Solid
• Odor: Odorless
• Density: 2.65 G/Cm³
• Molar Mass: 60.08 G/Mol
• pH in 4% Dispersion: 5.5~7.5
• Transport Package: 10 Kgs/Bag(S)
• Specification: 99.8%
• Trademark: Ethai™
• Origin: China
• HS Code: 2811221000
• Production Capacity: 300, 000 Mt/Year

Product Description

Product Description

Silicon Dioxide

    Silicon Dioxide is an inorganic compound composed of silicon & oxygen, with the chemical formula SiO₂. It widely exists in nature (such as quartz & sand) & is also commonly used in industries, food, medicine & other fields.

Specification

Item	Result
pH Value in 4% Dispersion	5.5~7.5
Loss on Drying	≤1.5
Loss on Ignition	≤10
Silica Content	≥99.8%
Tamped Density	40~60
Carbon Content	4.5~6.5

Application

Environmental Protection & Agriculture Field

Pharmaceutical Field

    It can be used as a filter medium for water purification to adsorb impurities in water; in agriculture, it can be used as a soil amendment to improve soil aeration & water retention, or as a pesticide carrier to enhance the stability of pesticide efficacy.

    Used in pharmaceutical preparations, for example, as a filler or glidant in tablets & capsules to help pharmaceutical powders form smoothly & improve dissolution & absorption after administration.

Industrial Field

Cosmetics Field

Food Field

    It is a core raw material for producing glass, ceramics & cement. Meanwhile, it can be used to manufacture high-precision industrial products such as quartz glass & optical fibers & also serve as a reinforcing agent for rubber & plastics to enhance material strength.

    Added to skin care products (such as lotions & foundations) & color cosmetics to absorb oil, increase the smoothness & concealing power of products & can also be used as an abrasive in toothpaste to clean teeth.

    Added as an anti-caking agent to powdered foods such as milk powder, coffee powder & seasonings to prevent particles from clumping & keep the products in a loose state.

Packing & Delivery

Packing Details

Delivery Details

Sample Packing: Foil bags
Bulk Packing: 25 kgs bags or jumbo (ton) bags

Sample Shipping: Shipped within 1~3 days after sample order confirmation via FedEx, UPS, DHL or EMS
Bulk Shipping: Shipped within 7~10 days after bulk order confirmation via sea freight or air freight. We will also fully cooperate if customers have familiar freight forwarders.

Company Profile

Shanghai Ethaichem Co., Ltd.

    Shanghai Ethaichem Co., Ltd. is a high-tech manufacturing enterprise specializing in the production of high-performance inorganic pigments & functional chemical materials. With a skilled workforce of over 200 employees & covering an area of 60 acres, the company operates integrated R & D, production and sales facilities capable of producing 100,000 tons of coating raw materials annually. Equipped with advanced manufacturing systems & automated production lines, the company is dedicated to delivering products of consistent quality & reliable performance. It has been certified under ISO 9001, ISO 14001 & OHSAS 18001 management systems, ensuring stringent control over quality, environmental impact & occupational health & safety.

    The company's manufacturing portfolio includes titanium dioxide, zinc oxide, antimony trioxide & a full range of iron oxide pigments (including yellow, orange, black, red & others). These products are widely used across various industries, with a strong emphasis on the paint and coatings sector. Titanium dioxide is recognized for its excellent hiding power and dispersion properties, making it ideal for high-quality architectural & industrial coatings. Zinc oxide is mainly used as a functional pigment and additive to improve the corrosion resistance, weather resistance, antibacterial and mildew resistance of coatings. Antimony trioxide serves as a highly effective flame retardant synergist, widely applied in plastics, rubber & other polymer materials. The iron oxide series offers consistent color stability, weather resistance and durability, making them suitable for demanding applications such as industrial coatings, construction materials & colored concretes. 

    In addition to standard grades, the company provides customized solutions tailored to specific customer requirements,supported by a professional technical team and well-established R & D platforms. Strategically located in Shanghai with efficient logisticsconnections, the company exports its products to markets in Europe, the Americas, the Middle East & Southeast Asia. Committed to innovation andexcellence, Shanghai Ethaichem aims to be a global leader in functionalmaterials, providing superior products and technical support to customersworldwide.

FAQ

Q1: Packing Terms
    Standard packing: 25 kgs bags or jumbo (ton) bags.
    Custom packing is available if you have a legally registered patent for specific packaging or special needs (subject to relevant document confirmation, if applicable).
 
Q2: Payment Terms
    Accepted methods: T/T , Western Union, Bitcoin, Tether (USDT). Confirm your preferred method with our sales team before ordering.
 
Q3: Shipping Method
    Small packages (samples/small-quantity orders): Via international couriers (DHL, UPS, FedEx, EMS).
    Bulk shipments: Sea/air freight arranged based on your order volume and delivery timeline.
 
Q4: Delivery Time
    In-stock products: Shipped within 1~2 business days after receiving your advance payment.
    Custom/non-stock products: Timeline varies by product type and order quantity (clear timeline provided in quotation).
 
Q5: MOQ & Free Samples
    MOQ: Low MOQ for small-batch purchases (specific details in quotation).
    Samples: Not less than 1 kg free for quality testing (customers cover shipping costs).
 
Q6: Order Process
    (1) Inform us of your product requirements (type/specifications) or intended application.
    (2) We issue a detailed quotation based on your needs or professional recommendations.
    (3) After confirming sample quality (if requested), place a official order & pay the advance deposit.
    (4) We arrange production immediately after receiving the deposit (discounts for large-quantity orders).
 
Q7: Product Quality Guarantee
    100% quality inspection for all products before delivery.
    If quality issues arise from our production/inspection, we offer free replacements or refunds (subject to issue confirmation via photos/videos).
 
Q8: Long-Term Mutually Beneficial Cooperation
    Maintain consistent quality and competitive pricing to protect your interests and market competitiveness.
    Treat customers as partners (not just "friends"): conduct business with sincerity, respect geographical/cultural differences & build trust.