UCSF Lab Standard Operating Procedure
Chemical Process, Name or Hazard Class:
Ferrosilicon
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Type of SOP:
☐ Process
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☒Hazardous Chemical
☐ Hazardous Class
Purpose
Ferrosilicon or Ferric silicon is toxic.
High concentrations of ferrosilicon dust causes acute and chronic irritation and respiratory effects.
Ferrosilicon is an alloy of iron and silicon.
Physical & Chemical Properties/Definition of Chemical Group
CAS#: 8049-17-0
Class: Toxic
Molecular Formula: metal alloy FeSi2
Form (physical state): solid
Color: white
Boiling point: N/A
Potential Hazards/Toxicity
Ferrosilicon
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Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)
Acute inhalation of either silicon or iron dust may cause respiratory and mucous membrane irritation and
cough. Metal fume fever may occur due to the inhalation of iron oxide particles sized below 1.5 microns
(usually 0.02-0.05 microns).
Other symptoms may include upper respiratory tract irritation accompanied by coughing and a dryness of
the mucous membranes. Fever, chills, muscular pain, mild to severe headache, nausea, occasional vomiting,
exaggerated mental activity, profuse sweating, excessive urination, diarrhea and prostration may also occur.
Chronic silicon dust exposure may cause airway resistance and may contribute to chronic bronchitis.
Prolonged or repeated iron dust exposure may cause a mottling of the lungs (siderosis). Prolonged skin
contacted may cause irritation. May cause eye irritation discoloration of the cornea and iris, and pupillary
effects including poor reaction to light.
Silicon and iron have permissible exposure limits of 10 mg/m3.
Lump ferrosilicon is not flammable, very fine dust posses potential explosion hazard.
Engineering Controls
Handle using a chemical fume hood with good ventilation and electrically grounded lines and equipment.
Personal Protective Equipment (PPE)
Respirator Protection
If lab personnel would like to use respirator on a voluntary basis, they must be trained and fit-tested by
EH&S. This is a regulatory requirement. (http://or.ucsf.edu/ehs/8193-DSY/version/default/part/4/data/)
Hand Protection
Gloves must be worn.
NOTE: Consult with your preferred glove manufacturer to ensure that the gloves you plan on using are
compatible with Ferrosilicon.
Refer to glove selection chart from the links below:
http://www.ansellpro.com/download/Ansell_8thEditionChemicalResistanceGuide.pdf
OR
http://www.allsafetyproducts.biz/page/74172
OR
http://www.showabestglove.com/site/default.aspx
OR
http://www.mapaglove.com/
Eye Protection
ANSI approved properly fitting safety glasses or chemical splash goggles.
Skin and Body Protection
Flame resistant lab coats must be worn and be appropriately sized for the individual and buttoned to their
full length. Laboratory coat sleeves must be of sufficient length to prevent skin exposure while wearing
gloves. Full length pants and close-toed shoes must be worn at all times by all individuals that are occupying
the laboratory area. The area of skin between the shoe and ankle should not be exposed.
Hygiene Measures
Wash thoroughly and immediately after handling. Remove contaminated clothing and wash before reuse.
Ferrosilicon
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Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)
First Aid Procedures
If inhaled
Move into the fresh air immediately and give oxygen. If not breathing give artificial respiration. Get medical
attention immediately.
In case of skin contact
Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention
immediately.
In case of eye contact
Check for and remove any contact lenses. Rinse thoroughly with plenty of water for at least 15 minutes and
consult a physician. Seek immediate medical attention and continue eye rinse during transport to hospital.
If swallowed
Do NOT induce vomiting unless directed by medical personnel. Never give anything by mouth to an
unconscious person. Seek medical attention immediately.
Special Handling and Storage Requirements
Wash hands thoroughly after handling. Minimize the generation and accumulation of dust. Avoid contact with
eyes, skin, and clothing. Keep containers tightly closed. Store in a cool, dry and well-ventilated area away
from incompatible substances.
Spill and Accident Procedure
Chemical Spill Dial 9-911 from campus phone or 415-476-1414 from cell phone or 415-2068522 (SFGH only)
Spill – Assess the extent of danger. Assist contaminated or injured persons. Evacuate the spill area.
Avoid breathing vapors. If possible, confine the spill to a small area using a spill kit or absorbent
material. Keep others from entering contaminated area (e.g., use caution tape, barriers, etc.).
Small (<1 L) – If you have training, you may assist in the clean-up effort. Use appropriate personal
protective equipment and clean-up material for chemical spilled. Double bag spill waste in clear
plastic bags, label and take to the next chemical waste pick-up.
Large (>1 L) – Dial 9-911 from campus phone or 415-476-1414 from cell phone or 415-2068522 (SFGH only) for assistance.
Chemical Spill on Body or Clothes – Remove clothing and rinse body thoroughly in emergency
shower for at least 15 minutes. If discomfort persists, proceed to the Emergency Department. If no
further discomfort is experienced, have the SDS ready and contact Poison Control Hotline at 1-800222-1222 for further exposure information. Notify your direct supervisor and EH&S at 415-4761300 during work hours, or 9-911 during non-working hours and weekends.
Chemical Splash Into Eyes – Immediately rinse eyeball and inner surface of eyelid with water for
15 minutes by forcibly holding the eye open. If discomfort persists, proceed to the Emergency
Department. If no further discomfort is experienced, have the SDS ready and contact Poison
Ferrosilicon
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Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)
Control Hotline at 1-800-222-1222 for further exposure information. Notify your direct
supervisor and EH&S at 415-476-1300 during work hours, or 9-911 during non-working
hours and weekends.
Medical Emergency Dial 9-911 (campus phone) or 476-6911 (cell phone)
Note: All serious injuries must be reported to EH&S at 415-476-1300 within 8 hours.
Non-Life Threatening Emergency– Go to Occupational Health Programs (OHP) Clinic, 415-8857580, 2330 Post Street, Suite 460 Hours of Operation for Appointments: Monday - Friday
7:30 a.m. - 4:00 p.m. (except Holidays).
Note: All serious injuries must be reported to EH&S at 415-476-1300 within 8 hours.
Needle stick/puncture exposure (as applicable to chemical handling procedure) – Wash the
affected area with antiseptic soap and warm water for 15 minutes. For mucous membrane
exposure, flush the affected area for 15 minutes using an eyewash station. Page the needle stick
nurse by dialing 415-353-7842 (STIC).
Decontamination/Waste Disposal Procedure
Clean contaminated surfaces with soap and water and paper towels. Dispose of the paper towels as
hazardous waste.
Safety Data Sheet (SDS) Location
Online SDS can be accessed at http://or.ucsf.edu/ehs/7241-DSY/msds.html
Protocol/Procedure
Quantities covered by this SOP:
______ (g , ml) to _______ (g, ml)
Temperature range covered by this SOP:
__ °C – __ °C
General Overview and Purpose:
Enter the experimental purpose
Procedure:
Enter experimental procedure. You can copy procedure from your lab notebook or from literature.
NOTE
Ferrosilicon
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Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)
Any deviation from this SOP requires approval from the Principal Investigator.
Ferrosilicon
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Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)