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What are other names or identifying information for titanium dioxide?

CAS Registry No.: 13463-67-7
Other Names: TiO2, Titanium white
Main Uses: Pigment, filler, opacifying agent
Appearance: White powder.
Odour: Odourless

Canadian TDG: Not regulated under Canadian TDG Regulations.


What is the WHMIS classification?

D2A - Very Toxic (Carcinogenicity)

Symbol for Class D2
Class D2A

What are the most important things to know about titanium dioxide in an emergency?

Emergency Overview: White powder. Odourless. Will not burn. SUSPECT CANCER HAZARD. Suspected of causing cancer, if inhaled.


What are the potential health effects of titanium dioxide?

Main Routes of Exposure: Inhalation; skin contact; eye contact.

  • Inhalation: At high concentrations: can irritate the nose and throat.
  • Skin Contact: May cause mild irritation.
  • Eye Contact: May cause slight irritation as a "foreign object". Tearing, blinking and mild temporary pain may occur as particles are rinsed from the eye by tears.
  • Ingestion: Not harmful.
  • Effects of Long-Term (Chronic) Exposure: Conclusions cannot be drawn from the limited studies available.
  • Carcinogenicity: Possible carcinogen. May cause cancer based on animal information. Has been associated with: lung cancer.

International Agency for Research on Cancer (IARC): Group 2B - Possibly carcinogenic to humans.
American Conference for Governmental Industrial Hygienists (ACGIH): A4 - Not classifiable as a human carcinogen.*Under review by ACGIH.

  • Teratogenicity / Embryotoxicity: Not known to harm the unborn child.
  • Reproductive Toxicity: Not known to be a reproductive hazard.
  • Mutagenicity: Not known to be a mutagen.

What are first aid measures for titanium dioxide?

Inhalation: Take precautions to ensure your own safety before attempting rescue (e.g. wear appropriate protective equipment). Move victim to fresh air.

Skin Contact: Quickly and gently blot or brush away excess chemical. Wash gently and thoroughly with lukewarm, gently flowing water and non-abrasive soap for 5 minutes.

Eye Contact: Quickly and gently blot or brush chemical off the face. Immediately flush the contaminated eye(s) with lukewarm, gently flowing water for 5 minutes, while holding the eyelid(s) open. If irritation or pain persists, see a doctor.

Ingestion: Have victim rinse mouth with water. Call a Poison Centre or doctor if the victim feels unwell.

First Aid Comments: If exposed or concerned, see a doctor for medical advice. All first aid procedures should be periodically reviewed by a doctor familiar with the chemical and its conditions of use in the workplace.


What are fire hazards and extinguishing media for titanium dioxide?

Flammable Properties: Does not burn.

Suitable Extinguishing Media: Not combustible. Use extinguishing agent suitable for surrounding fire.

Specific Hazards Arising from the Chemical: None known.


What are the stability and reactivity hazards of titanium dioxide?

  • Chemical Stability: Normally stable.
  • Conditions to Avoid: Generation of dust.
  • Incompatible Materials: Chemically stable. Not corrosive to metals.
  • Hazardous Decomposition Products: None known.
  • Possibility of Hazardous Reactions: None known.

What are accidental release measures for titanium dioxide?

Personal Precautions: Keep unnecessary and unprotected personnel out of spill area. Use personal protective equipment as required.

Methods for Containment and Clean-up: Avoid generating dust. Collect using shovel/scoop or approved HEPA vacuum and place in a suitable container for disposal. Avoid dry sweeping. If necessary, use a dust suppressant such as water. Do not use compressed air for clean-up.


What handling and storage practices should be used when working with titanium dioxide?

Handling: Before handling, it is important that all engineering controls are operating and that protective equipment requirements and personal hygiene measures are being followed. Immediately report leaks, spills or failures of the safety equipment (e.g. ventilation system). Avoid generating dusts. Keep containers tightly closed when not in use or empty. Prevent accidental contact with incompatible chemicals.

Storage: Store in tightly closed, properly labelled containers.


What is the American Conference of Governmental Industrial Hygienists (ACGIH®) recommended exposure limit for titanium dioxide?

ACGIH® TLV® - TWA: 10 mg/m3* A4*

Exposure Guideline Comments: TLV® = Threshold Limit Value. TWA = Time-Weighted Average. A4 = Not classifiable as a human carcinogen. *Under review by ACGIH.


What are the engineering controls for titanium dioxide?

Engineering Controls: Use a local exhaust ventilation and enclosure, if necessary, to control amount in the air.


What Personal Protective Equipment (PPE) is needed when working with titanium dioxide?

Eye/Face Protection: Wear chemical safety goggles.

Skin Protection: Coveralls or long sleeve shirts and pants.

Respiratory Protection: Do not breathe in this product. Wear a NIOSH approved self-contained breathing apparatus (SCBA) or supplied air respirator. ESCAPE: wear a NIOSH approved air-purifying respirator with N100, R100, or P100 filter(s), or, wear a NIOSH approved self-contained breathing apparatus (SCBA) or supplied air respirator.

NOTE: NIOSH has classified this material as a potential occupational carcinogen, according to specific NIOSH criteria. This classification is reflected in these recommendations for respiratory protection, which specify that only the most reliable and protective respirators be worn at any detectable concentration. NIOSH has changed their policy on respiratory protection for possible carcinogens but not yet revised these recommendations for respiratory protection. The requirements in Canadian jurisdictions may vary.

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Document last updated on February 20, 2013

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