28 - Fumed Silica || High Purity Silicon Dioxide || HSN: 28112200

Countries & Product Trade Names

• United States: Fumed Silica, Aerosil

• Germany: Pyrogenic Silica

• China: Silica Fume, Amorphous Silica

• Japan, South Korea: Fumed Silicon Dioxide

• Brazil: Industrial Fumed Silica

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Available Product Types for International Trade

• Hydrophilic Fumed Silica

• Hydrophobic Fumed Silica

• Amorphous Fumed Silica

• Specialty Grades (for pharma/food)

• Bulk and custom particle size offerings

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Product Classification

• Exact 8-digit HSN Code: 28112200

• Category: Inorganic Chemicals

• Subcategory: Silicon Dioxide (including fumed, amorphous forms)

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• Appearance: White, powdery, ultra-fine

• Particle Size: 5–50 nm

• Surface Area: 50–400 m²/g

• Density: ~0.04 g/cm³ (bulk)

• Moisture Content: <1%

Chemical Properties

• Purity (SiO₂): >99.8%

• pH (4% dispersion): 3.5–4.5

• Solubility: Insoluble in water, soluble in hydrofluoric acid

• Chemical Stability: High

• Trace Impurities: Sodium, iron, <50 ppm

Mechanical Properties

• Reinforcement: Increases viscosity

• Thixotropy: Excellent

• Flowability: Anti-caking and free-flowing

• Hardness: Mohs 7

• Stability: Stable in formulations

Manufacturing Properties

• Produced by vapor-phase hydrolysis of silicon tetrachloride

• Continuous process for consistency

• ISO and GMP compliant

• Quality controlled for purity, particle size

• Environmental containment protocols

Industrial Use

• Rheology modifier in adhesives/sealants

• Pigment & viscosity control in paints/coatings

• Anti-caking agent in plastics/rubber

• Functional excipient in pharmaceuticals/food

• Catalyst supports and electronics

Market Overview

• High global demand in paints, drugs, food, and construction

• India a reliable export source due to price and quality

• Adoption in eco-friendly, high-tech, and specialty segments

• Regulatory compliance critical for food/pharma uses

Packaging

• 10–20 kg multi-layer paper bags

• 200–500 kg FIBC jumbo bags

• Moisture-proof and contamination-resistant

• Custom labeling and grade information

• Palletized for export

Shipping

• Containerized bulk sea freight

• Air freight for urgent specialty orders

• Key Indian ports:

• o Mumbai/Nhava Sheva (West Coast)
• o Mundra (West Coast)
• o Chennai (East Coast)
• o Visakhapatnam (East Coast)

INCO Terms

• FOB: Seller delivers at Indian port, buyer arranges onward freight

• CFR: Seller delivers to destination port

• CIF: Seller includes insurance and shipping to buyer’s port

Payment Terms

• Full advance payment

• Sight Letter of Credit (LC)

• Combo: Partial advance + Sight LC

Required Export Certificates from India

• Certificate of Origin

• MSDS (Material Safety Data Sheet)

• ISO/GMP Certificate

• Commercial Invoice & Packing List

• Food/Pharma compliance certificates for relevant grades

Implied Taxation

• Domestic Trade: GST 18%

• Export: Zero-rated GST, refund eligible for exporters

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Kaizen BMS International Buyer Profile

Kaizen BMS is a Government of India-recognized global exporter delivering certified Fumed Silica tailored for industrial, pharma, and specialty applications. Offering contract manufacturing, robust compliance, and efficient merchant exports, Kaizen BMS is the trusted partner for international buyers seeking cost-effective, high-purity silicon dioxide and ongoing logistical support.