1. Overview of Titanium Dioxide
Titanium dioxide (TiO₂) is one of the most widely used white inorganic pigments globally, valued for its exceptional whiteness, opacity and chemical stability. In commercial practice, titanium dioxide is supplied in different grades depending on purity requirements and end-use environments, with the two most common categories being:
- Food Grade Titanium Dioxide
- Industrial Grade Titanium Dioxide
Although the core chemical composition is identical, these grades differ significantly in purity control, regulatory compliance, surface treatment and application focus.
In most formulations, titanium dioxide is not used for chemical reactivity but for its optical performance through light scattering, enabling manufacturers to achieve consistent brightness, opacity and color uniformity.
SNOWHITE CHEMICAL CO., LTD supplies titanium dioxide for both food-related and industrial applications, with grade selection tailored to downstream processing and regulatory requirements.
Basic Chemical Information
Chemical Name: Titanium Dioxide
Molecular Formula: TiO₂
Molecular Weight: 79.87 g/mol
CAS No.: 13463-67-7
HS Code: 32061110
Appearance: White fine powder
UN No.: Not classified as dangerous goods
Titanium dioxide is chemically inert and non-flammable, allowing standard international transportation and storage when properly handled.
2. Crystal Forms of Titanium Dioxide
Commercial titanium dioxide exists mainly in two crystalline structures:
Rutile
Anatase
While chemically identical, the difference in crystal lattice leads to substantial differences in optical efficiency, UV behavior, durability and application suitability.
Understanding this distinction is critical for correct grade selection.
2.1 Rutile Titanium Dioxide
Rutile is the most thermodynamically stable form and dominates high-end industrial applications.
Structural characteristics
- Tighter crystal packing
- Higher density
- Higher refractive index (~2.7)
- Lower photocatalytic activity
- Better surface treatment compatibility
Why rutile performs better outdoors
Because rutile has lower photoactivity, it generates fewer free radicals under UV exposure. In practical terms, this means:
- Less coating chalking
- Better gloss retention
- Improved weather resistance
- Longer service life
This is why most coating- and plastic-grade TiO₂ is rutile type.
2.2 Anatase Titanium Dioxide
Anatase has a more open crystal structure and slightly different optical behavior.
Structural characteristics
- Lower refractive index (~2.5)
- Higher intrinsic brightness in some systems
- Higher photocatalytic activity
- Easier wetting in certain formulations
- Usually lower cost
Practical implication
Because anatase is more photoactive, it is typically preferred when:
- Outdoor durability is not critical
- Food or indoor systems are involved
- Extremely high weather resistance is unnecessary
- Cost control is important
Many food grade titanium dioxide products are based on anatase, although this depends on regulatory positioning and specific processing design.
3. Food Grade Titanium Dioxide
3.1 Overview of Food Grade Titanium Dioxide
Food grade titanium dioxide is a high-purity inorganic pigment widely used in the food industry to improve product appearance, brightness and visual consistency. Unlike industrial or coating-grade titanium dioxide, food grade material is produced under stricter quality control systems and must comply with relevant food safety regulations.
In practical food formulation and processing, titanium dioxide is not used for nutritional or functional flavor purposes, but rather for visual optimization. It helps manufacturers achieve uniform whiteness, opacity and color stability across different batches, especially in products where appearance strongly influences consumer perception.
SNOWHITE CHEMICAL CO., LTD supplies food grade titanium dioxide specifically designed for food-related applications, focusing on purity, consistency and regulatory compliance to support long-term and stable use in global markets.
3.2 Physical & Chemical Characteristics
Food grade titanium dioxide supplied by SNOWHITE CHEMICAL CO., LTD typically exhibits:
- High whiteness and brightness
- Fine and uniform particle size distribution
- Good dispersion behavior in food matrices
- High opacity at low addition levels
- Excellent chemical stability
- Low moisture content and tightly controlled impurities
These properties allow food manufacturers to achieve consistent visual results without significantly affecting taste, texture or processing behavior.
3.3 Functional Behavior in Food Applications
The primary function of food grade titanium dioxide is efficient visible light scattering.
Because TiO₂ has one of the highest refractive indices among white pigments, it strongly reflects and refracts incident light. When properly dispersed, the particles create multiple light-scattering interfaces within the food matrix, producing:
- Bright white appearance
- Strong opacity
- Effective masking of base color
Why particle size matters
Maximum whitening efficiency typically occurs when TiO₂ particle size is close to half the wavelength of visible light (~200–300 nm). At this range:
- Light scattering is maximized
- Hiding power increases
- Required dosage decreases
This is why tight particle size control is critical in food grade material.
3.4 Practical Considerations in Food Formulation
When using food grade titanium dioxide, formulators should pay attention to:
Dispersion method
Proper mixing helps avoid agglomeration and ensures uniform color.
Dosage control
Small dosage changes can significantly affect perceived whiteness.
Matrix interaction
High-fat or high-sugar systems may require optimized dispersion.
Regulatory limits
Usage levels must comply with local food regulations.
SNOWHITE CHEMICAL CO., LTD works closely with customers to provide grade selection and usage guidance.
3.5 Major Food Applications
Confectionery & Candy Products
Used in:
- Sugar-coated candies
- Chewing gum coatings
- Chocolate dragées
- Decorative confectionery
Function: enhance surface brightness and visual cleanliness.
Bakery & Powdered Food Products
Used to:
- Improve whiteness in powdered mixes
- Maintain uniform color in coatings and fillings
- Enhance decorative appearance
Its stability allows it to withstand typical baking and drying processes.
Dairy Analogues & Processed Foods
Used to:
- Improve color consistency
- Mask natural raw material variation
- Enhance overall product appearance
Proper dispersion ensures smooth texture and uniform visual quality.
4. Industrial Grade Titanium Dioxide
4.1 Overview
Industrial grade titanium dioxide is primarily engineered as a high-performance white pigment for coatings, plastics, inks, paper and rubber. Unlike food grade material, the design focus shifts toward:
- Weather durability
- Surface treatment technology
- Dispersion efficiency
- Cost-performance optimization
Most industrial applications—especially outdoor coatings—prefer rutile titanium dioxide with inorganic or organic surface treatment.
4.2 Why Surface Treatment Matters
Industrial TiO₂ particles are rarely used in untreated form. Instead, they are typically coated with materials such as:
- Al₂O₃
- SiO₂
- Organic modifiers
Purpose of surface treatment
- Improve dispersion in polymers and coatings
- Reduce photocatalytic activity
- Enhance weather resistance
- Improve processing flow
This is one of the biggest technical differences vs food grade TiO₂.
Food grade material focuses on purity, while industrial grade often focuses on surface engineering.
4.3 Typical Industrial Applications
Coatings & Paints
Provides:
- High hiding power
- Gloss improvement
- UV resistance
- Weather durability
Plastics & Masterbatch
Provides:
- Opacity
- Bright whiteness
- Thermal stability
- Processing consistency
Paper & Ink
Used to enhance:
- Print contrast
- Brightness
- Surface uniformity
5. Quality Control & Supply Strength
SNOWHITE CHEMICAL CO., LTD supplies titanium dioxide with:
- Controlled purity and particle size
- Consistent batch stability
- Food-grade compliant production
- l Industrial-grade surface treatment options
- Complete COA and documentation
6. Packaging & Storage
6.1 Packaging Options
- 25 kg paper bags with inner PE
- Customized packaging upon request
- Export-standard palletizing
6.2 Storage Recommendations
- Store in a dry, cool and well-ventilated area
- Protect from moisture and contamination
- Keep packaging tightly sealed after opening
Under recommended conditions, titanium dioxide remains stable over extended periods.
7. Supply & Technical Support from SNOWHITE CHEMICAL CO., LTD
SNOWHITE CHEMICAL CO., LTD provides reliable global supply of both food grade and industrial grade titanium dioxide, supported by:
- Stable production and export capacity
- Consistent quality control systems
- COA, SDS and regulatory documentation
- Application-oriented technical guidance
The company is recognized by customers worldwide as a dependable titanium dioxide supplier.
