Hypertherm LR2075 - Manual (Page 54)

Hypertherm Laser Heads a-3
Ophir Optronics Ltd.
Science Based Industries Park Har-Hotzvim
P.O.Box 45021 Jerusalem 91450, ISRAEL
Tel: 972-2-5484444 Fax: 972-2-5822338
w w w . o p h i r o p t . c o m
[email protected]
• Flash point (test method): Not flammable and not explosive.
Section V – Health Hazard Data
• ZnSe – Effects are not known, but some zinc and selenium can be formed, such as:
• Zinc oxide – Chills and fever.
• Selenium and compounds – Acute exposure might produce sternal pain, cough,
nausea, pallor, coated tongue, gastro-intestinal disorders, nervousness and/or
conjunctivitis. A garlic odor of the breath or sweat may occur.
• Thorium – Suspected carcinogen due to its radioactivity at NISH levels of intake.
However, no effects observed for inhalation intakes of less than 270 to 540mg per
year, at which point risks are thought to increase linearly with intake. External
exposure from holding a lens continuously for 2,000 hours per year is less than the
exposure associated with 2 dental x-rays, 1 round trip transcontinental US plane
flight, or smoking 1/3 of a cigarette per day for 1 year.
• Inorganic Fluorides – Generally highly irritating and toxic. Inhalation may cause
irritation to the respiratory tract and mucous membrane, asthma attacks excessive
salivation, thirst, sweating, vomiting, colic, diarrhea, lung granulomas, fluoresis,
and pulmonary fibrosis.
Threshold Limit Value:
Material Limit
Zinc Oxide fumes 5mg/m
Zinc Oxide dust 10mg/m
Selenium and Components 0.2mg/m
Occupational Annual Limit On Intake By Inhalation:
Material Limit
Thorium Fluoride dust with 1
µ particle size
136 mg
(value increases significantly with increasing
particle size to a maximum at 20
µm at
which point particles are no longer respirable)
Emergency and First Aid Procedures: In Dust Form:
Eyes: Wash with plenty of water – See physician
Skin: Wash with plenty of water – See physician
Ingestion: Call Physician
Inhalation: Remove from exposure, treat symptomatically, call physician
Special Precautions:
Handling and storage precaution: