NEMA Grades FR-4, FR-5 / IPC4101E/21

2.1 Classification of the substance or mixture

This material, as sold, is not hazardous under the criteria of the Federal OSHA Hazard Communication Standard 29CFR 1910.1200 Dust and fumes generated during machining/sanding of this material is classified as hazardous per OSHA standards. GHS Signal Words with Hazard and Precautionary Statements: Warning! Dust generated during machining, grinding or sanding may cause eye irritation. Fumes from decomposition or burning may irritate eyes, nose and respiratory system. Dust generated by secondary operations can be explosive. Avoid eye exposure to dust and fumes. Avoid skin exposure to dust and fumes.

Hazard pictograms

Warning! This product may form combustible dust during processing.

Principle Routes of Exposure

None for this product as sold. For dust or chips generated during fabrication operations: eye contact, skin contact, and inhalation. Skin Contact: Solid sheet may be abrasive to, or cut the skin. Operations such as milling, cutting, grinding, etc. may produce dust or fines that may be irritating. Eye Contact: No hazard for product as sold. Operations such as milling, cutting, grinding, etc. may produce dust or fines that may be irritating. Respiratory Contact: Not an expected route of entry as sold. Operations such as milling, cutting, grinding, etc. may produce dust or fines that may be irritating. Prolonged exposure to dust may cause chronic respiratory illness. Ingestion: Not an expected route of entry as sold. If large amounts of dust are swallowed, seek medical attention. HMIS (United States) NFPA (United States) WHMIS (Canada): Not classified as hazardous Health 1 0 Flammability 0 Reactivity 0 1 0 PPE B