Oriented Strand Board (OSB)

SECTION 2: Hazards identification

OSHA Hazards NFPA (USA)

Appearance/Odor

Solid oriented strand board. Canada This is not a controlled product under

Potential health effects

ACUTE (short term): see section 8 for exposure controls

Principle Routes of Exposure

Risk of exposure to wood dust occurs only during cutting and sanding. If this occurs, exposure can occur by inhalation, skin contact, and eye contact. Inhalation No health effects expected with normal use of the boards. Inhalation of wood ducts may cause symptoms ranging from sneezing, coughing, or labored breathing. The irritation caused by some wood dusts may cause sinus inflammation and nose bleeds. Ingestion Not an applicable route of exposure. Skin No health effects expected with normal use of the boards. All wood dusts are known to cause irritation. Mechanical irritation results from dust particles being trapped in the clothes and producing abrasions. Chemical agents in the wood dust may cause contact dermatitis with redness, scaling, and itching. p. 1/6 2. HAZARDOUS IDENTIFICATION (CONTINUED) Eye No health effects expected with normal use of the boards. Direct contact with the eyes to wood dust is expected to cause moderate to severe irritation and inflammation.

Long term hazards

see Section 11 for additional toxicological data Repeated or prolonged inhalation exposure may result in asthmas and/or rhinitis. Studies have shown that occupational asthma is the result of irritation of the dust. Cases of pulmonary fibrosis have been reported in individuals with long-term exposure to wood dust. Nasal carcinomas, especially adenocarcinoma, have been documented in workers in the furniture and cabinet-making industries. This excess risk occurs mainly in those exposed to wood dust. A study has suggested that this is because of the prolonged retention of wood dust in the nasal cavity.

Medical Conditions Generally Aggravated by Exposure

Skin contact may aggravate an existing dermatitis. by Exposure

Interactions with other chemicals

Not available

Environmental effects

Not available 3. HAZARDOUS INGREDIENTS AND COMPOSITION Component(1) CAS# Exposure Limits Cancer Designation Wood Dust Not applicable Hardwood TLV-TWA 1mg/m3 (2) MAK-1, NOISH-Ca, TLV-A1, NTP-K Softwood TLV-TWA 5mg/m3 (2) Phenol-Formaldehyde Resin Phenol 108-95-2 PEL-TWA 5 ppm MAK-3B Formaldehyde 50-00-0 PEL-TWA 0.75 ppm EPA-B1, IARC-1, NIOSH-Ca, NTP- R, OSHA-Ca, TLV-A2 TLV-C 0.3 ppm Paraffin wax 8002-74-2 PEL-TWA 2mg/m3 N/A 1. Small amounts of water-base paint and oil-base black stamp ink may be used to identify the product and the nailing pattern and to impede moisture absorption along the edges. 2. Hardwood dust (aspen, birch, black poplar, beech or oak) and Softwood dust (Southern yellow pine) OSHA PELTWA 15 mg/m3 with a respirable fraction is limited to 5 mg/m3. TLV-TWA 10 mg/m3 with respirable particulate limited to 3 mg/m3. 3. Resin solids limits are for loose dust; however, respirable portion for resin solids and loose dust is limited to 5 mg/m3 4. Paraffin was fume 5. Values for State PEL (or Province OEL) may be more restrictive.