UV Filter – TTO-51 Series

Ultrafine titanium dioxide for transparent and effective UVB protection.
TTO-51 delivers low photoactivity, high transmittance, and a safe profile for sun care formulations.

High-Performance Transparent UV Filter for Sensitive and Clean Sun Care

TTO-51 is part of the TTO-51 series of ultrafine rutile-type titanium dioxide with a primary particle diameter of 20 nm. It offers strong UVB protection in the 290–320 nm range while maintaining high transmittance in the visible light spectrum – enabling transparent sunscreen formulations without white cast.

TTO-51 exhibits low photoactivity, low heavy metal content, and excellent skin tolerability, making it ideal for sensitive and daily-use sun care products. The product is dispersible in highly polar ester oils and offers a good balance between protection and visual aesthetics.

Available grades:

  • TTO-51A (20nm)
  • TTO-51C (20nm)

NAGASE supplies TTO-51 globally for use in advanced sun care applications – with full technical support and reliable international logistics.

Applications

TTO-51 is ideal for transparent, effective sun care formulations requiring reliable UVB protection.

  • Sun creams and daily moisturizers with UVB filtering
  • Transparent sunscreens with minimal white cast
  • Skin-friendly UV protection for sensitive applications
  • Formulations using ester oil dispersions
  • Clean-label sun care products

Features

TTO-51 delivers transparent UV protection with safety, skin compatibility, and high performance.

  • Low irritancy profile – Suitable for sensitive skin
  • Excellent UVB protection – Absorbs in the 290–320 nm range
  • High transparency – Minimal visible light scattering
  • Low heavy metal content – Complies with safety standards
  • Sustainable and safe – Environmentally friendly sun filter

Additional Information

INCI Names:

  • Titanium Dioxide
  • Aluminum Hydroxide
  • Silica
  • Stearic Acid

Territories:
EMEA

Certifications:

  • China Compliant

Frequently Asked Questions about UV Filter – TTO-51 Series

What is TTO-51 and how does it work in sun care formulations?
TTO-51C is an ultrafine rutile titanium dioxide that absorbs UVB light while remaining transparent in visible wavelengths – ideal for lightweight sunscreens.

What is the average particle size of TTO-51?
It has a primary particle diameter of 20 nm, allowing for high transparency and even dispersion in oil-based systems.

Is TTO-51 safe for sensitive skin?
Yes, TTO-51C has low photoactivity, low heavy metal content, and minimal irritation potential, making it suitable for daily and sensitive-use applications.

How should TTO-51 be used in formulations?
It is recommended to first disperse TTO-51C in a highly polar ester oil before blending into the final formulation.

Can TTO-51 be used in clean-label sun care?
Absolutely – it offers a safe, sustainable alternative to traditional chemical filters and supports natural cosmetic claims.

Personal Care

Harmonie Magniez
for customers in France

Grace Wong, Maiko Ohashi
for EU customers outside France