CADMIUM FREE SILVER BRAZING ALLOY

SECTION 2: Hazards identification

Product name AWS A5.8 AMS AG CU ZN NI SN MN Silver-Copper-Tin-Zinc Alloys BAg-7 4763 56 22 17 5 Ingredient CAS No. % Copper 7440-50-8 4 - 41 Silver 7440-22-4 24 - 81 Tin 7440-31-5 1.5 - 26 Zinc 7440-66-6 1 - 35 III – Hazards Identification Important: This section covers the materials from which the product is manufactured. The fumes and gases produced during brazing with normal use of this product are covered in Section X. Section I lists nominal composition of the brazing filler metals. The table below lists the exposure limits for hazardous decomposition products that may be present in fume generated during brazing. Actual exposure should be determined by monitoring fume in the operator’s breathing zone. Ingredient PEL mg/m3 PEL mg/m3 TlV mg/m3 Copper 1.0 (Dusts & Mists) 0.1 (Fume) 1.0 (Dusts & Mists) 0.2 (Fume) Silver 0.01 0.1 (Metal) Tin 2.0 (as Sn) Zinc 5.0 (as ZnO Fume) 2.0* (as ZnO) 10.0* (Stel) *Both as respirable fractions. SARA Sections 313 Supplier Notification: Individual filler metals covered by this MSDS may contain the following toxic chemicals subject to the reporting requirements of Section 313 of the Emergency Planning and Community Right-To-Know Act of 1986 and 40 CFR 372. Copper, Manganese, Nickel, Silver and Zinc. Refer to Section I of this MSDS for the filler metal name and the percent by weight, and the above table for the CAS number for each chemical. One way to determine the composition and quantity of fumes and gases to which workers are exposed is to take an air sample in the workers breathing zone. See ANSI/AWS F1.1 available from the American Welding Society, 550 Laguna Rd. Miami FL, 33126. Primary Route of Exposure: Inhalation of fume. Pre-Existing Medical Conditions: Individuals with impaired pulmonary functions or illness my have symptoms exacerbated by fume irritants. Possible Effects of Exposure: Copper and Zinc fume may cause fume fever. Short term symptoms may include a metallic taste in the mouth, dryness of irritation of the throat, followed by coughing, shortness of breath, nausea, fever, body ache, and chills. Long-term exposure to brazing fume, gasses, or dust may contribute to pulmonary irritation or pneumoconiosis. Nickel should be considered a possible carcinogen per OSHA 29 CFR 1910.1200. Certain nickel compounds have been implicated based on experience in some nickel refining operations. The specific compounds, however, have not been determined and direct association between nickel in welding fume and cancer has not been demonstrated. Other Health Considerations: Brazing alloys are frequently used with a fluoride type flux. If applicable, flux fume should be considered in evaluation of hazards. Without Nickel –Carcinogenicity NTP No / IARC Monographs No / OSHA Regulated No With Nickel – Carcinogenicity NTP Yes / IARC Monographs No / OSHA Regulated No The State of California requires the following information for products containing Nickel. WARNING: This product contains a chemical known to the State of California that may cause cancer. Primary Routes of Entry: Ingestion; inhalation. Eye Hazards: Eye contact with these products in finely-divided forms may cause irritation, conjunctivitis, ulceration of the cornea, and/or argyria, a permanent blue-gray discoloration of the eyes, skin, mucous membranes, and respiratory tract. Skin Hazards: Skin contact with these products, particularly in finely-divided firms, may cause irritation, arguria, discoloration, and/or contact dermatitis. Ingestion Hazards: Ingestion of these products in finely divided forms may cause nausea, vomiting, and gastrointestinal irritation. Inhalation Hazards: Inhalation of the components of these products is not known to present a significant risk to health when used according to instructions an with appropriate protective measures (see Section 8). Inhalation of component elements has been reported to cause one or more of the following symptoms and effects upon excessively high or prolonged exposure: Copper: Acute exposure may cause respiratory tract irritation, fever, muscle ache, chills, cough, weakness, and a metallic taste. Chronic exposure may damage the liver, kidney, spleen, pancreas, and brain (a benign pneumoconiosis), shortness of breath, and respiratory tract irritation. Silver: Chronic exposure via inhalation may cause argyria. Tin: Exposure to tin dust or fume by inhalation may cause stannosis (a benign pneumoconiosis), shortness of breath, and respiratory tract irration. Zinc: Acute exposure to zinc oxide may cause respiratory tract irration and “metal fune fever”, which is characterized by a metallic taste, cough, dry throat, chills, fever, tightness of chest, headache, nausea, shortness of breath, vomiting, and fatigue.