Aerosil 200

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Aerosil 200 is a fumed silica (synthetic amorphous silicon dioxide) produced by flame hydrolysis of silicon tetrachloride. It appears as a very fine, white, fluffy powder with high surface area and excellent thickening and anti-caking properties.

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Categories: Thickeners, Additives, Fillers & Extenders, Fillers and Reinforcements Tags: Aerosil 200, Cosmetic ingredient, Pharmaceutical excipient, Silicon dioxide powder, Thickening agent

Description

Table of Contents

Aerosil 200

Primary Uses

Reinforcing Agent in Polymers & Elastomers

Improves mechanical strength and abrasion resistance in:

Silicone rubber (seals, gaskets, medical devices)

Epoxy resins (coatings, adhesives)

PVC, polyurethanes (cables, automotive parts)

Thickening & Anti-Settling Agent

Prevents sagging in:

Paints, coatings, inks (improves viscosity)

Cosmetics (lotions, creams, toothpaste)

Adhesives & sealants (enhances stability)

Free-Flow Agent for Powders

Prevents caking in:

Pharmaceutical tablets (improves powder flow)

Food powders (spices, instant drinks)

Industrial chemicals (pigments, detergents)

Matting Agent

Reduces gloss in:

Paints, varnishes (architectural/automotive finishes)

Plastics & films (packaging, synthetic leather)

Secondary Uses

Battery & Energy Storage

Improves electrolyte stability in lithium-ion batteries.

Catalyst Support

High surface area (200 m²/g) for chemical catalysis.

3D Printing

Enhances powder flowability in SLS (Selective Laser Sintering).

Thermal Insulation

Used in aerogels and high-temperature insulation.

Defoaming Agent

Controls foam in industrial processes (e.g., wastewater treatment).

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name: Propan-2-one (IUPAC), Acetone (common)

CAS Number: 67-64-1

HS Code: 2914.11.00

Molecular Formula: C₃H₆O

Synonyms: Dimethyl ketone, 2-propanone

2. Physical & Chemical Properties

Physical State: Liquid

Color & Odor: Colorless, pungent sweetish odor

Boiling Point: 56°C | Melting Point: -95°C

Density: 0.791 g/cm³

Solubility: Miscible in water, ethanol, ether

pH Level: ~7 (neutral)

Vapor Pressure: 233 mmHg (25°C)

Flash Point: -20°C (highly flammable)

Autoignition Temperature: 465°C

Viscosity: 0.32 cP (25°C)

3. Safety & Hazard Attributes

Hazard Class: Flammable Liquid (GHS Category 2), Eye Irritant

NFPA Ratings: Health (1), Flammability (3), Reactivity (0)

Exposure Limits: OSHA PEL (1000 ppm), ACGIH TLV (500 ppm)

Reactivity: Incompatible with strong oxidizers, acids

4. Storage & Handling Attributes

Storage Conditions: Cool, well-ventilated, away from ignition sources

Incompatible Materials: HNO₃, H₂O₂, halogens

Container Type: Plastic (HDPE) or metal (stainless steel)

Shelf Life: Indefinite if sealed properly

Special Handling: Use explosion-proof equipment, chemical gloves

5. Regulatory & Compliance Attributes

Regulatory Status: EPA (non-HAP), REACH registered, DOT Class 3 (flammable)

Hazard Symbols: ⚠️ (Flammable), GHS02, GHS07

Transportation Restrictions: UN1090, Packing Group II

Waste Disposal: Incineration or RCRA-approved solvent recovery

6. Environmental & Health Impact

Ecotoxicity: LC50 (fish, 96h) = 4.3 g/L (low toxicity)

Persistence: Readily biodegradable (half-life < 5 days)

Carcinogenicity: Not classified (IARC Group 3, OSHA non-carcinogen)

SAFETY HANDLING PRECAUTIONS

Safety Precautions

Personal Protective Equipment (PPE):

Respiratory: NIOSH-approved N95 respirator (for dust)
Eye Protection: Tight-fitting safety goggles
Gloves: Nitrile or neoprene
Body: Long-sleeved clothing + lab coat

Handling & Storage:

Avoid dust generation (use closed systems where possible)
Ground equipment (static electricity hazard)
Store in sealed containers away from moisture
Keep away from strong oxidizers (e.g., peroxides)

Hygiene Practices:

No eating/drinking in handling areas
Wash hands/face after use
Provide emergency eyewash station

First Aid Measures

Inhalation (Dust):

Move to fresh air immediately
If breathing is difficult, seek medical attention

Eye Contact:

Rinse with water for 15+ minutes (hold eyelids open)
Seek medical help if irritation persists

Skin Contact:

Wash with soap and water
Apply moisturizer if dryness occurs

Ingestion:

Rinse mouth with water
Drink plenty of water
Do NOT induce vomiting
Seek medical advice

Firefighting Measures

Fire Hazards:

Non-flammable but may form explosive dust clouds
Decomposes at >1000°C, releasing crystalline silica dust

Extinguishing Media:
✔ Water spray (best for dust suppression)
✔ CO₂
✔ Dry chemical powder

Firefighting Precautions:

Wear SCBA (self-contained breathing apparatus)
Avoid raising dust during firefighting
Cool containers with water spray

Spill & Disposal

Small Spills:

Wear dust mask + gloves
Dampen with water mist to suppress dust
Sweep up carefully

Large Spills:

Isolate area
Use industrial vacuum (explosion-proof)
Prevent entry into drains/waterways

Disposal:

Dispose as non-hazardous waste (unless contaminated)
Follow local silica dust regulations