UCSF Lab Standard Operating Procedure
Chemical Process, Name or Hazard Class:
Cobalt (II) Arsenate
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Type of SOP: ☐ Process ☒Hazardous Chemical ☐ Hazardous Class
Purpose
Cobalt arsenate or Cobalt (II) arsenate is highly toxic.
Contains arsenic, a known carcinogen.
Very harmful if inhaled, swallowed or in contact with the skin or eyes. Can also be fatal if inhaled or ingested.
Physical & Chemical Properties/Definition of Chemical Group
CAS#: 24719-19-5
Class: Toxic, carcinogenic
Molecular Formula: AsCo3O8
Form (physical state): Powder
Color: purple
Boiling point: 1000°C
Potential Hazards/Toxicity
Cobalt arsenate is highly toxic and carcinogenic. Patients may rapidly become hypotensive with rapid heart rate secondary to pain, cardiac effects of arsenic or anxiety. Toxic delirium, seizures, peripheral neuropathy and encephalopathy can occur. Arsenic is not likely to be a significant risk to human reproduction at permissible occupational exposure limits.
Ingestion: Can be fatal. Symptoms include abdominal pain, vomiting, profuse bloody or watery (rice-water-like) diarrhea, pain in the extremities and muscles, weakness. Inhalation can cause acute respiratory failure and pulmonary edema. Avoid skin or eye contact.
Cobalt arsenate has a threshold limit value of 0.01 mg/m3 TWA (as As, related to Arsenic, inorganic compounds).
Chronic exposure may cause nausea and vomiting.
Engineering Controls
Work with this chemical in a certified ducted fume hood. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
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://www.ehs.ucsf.edu/respiratory-protection-program)
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 cobalt arsenate.
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. As outlined in UCLA Policy 905 personnel should also wear full length pants, or equivalent, and close-toed shoes. 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.
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
To keep contamination to a minimum, all work with Cobalt arsenate or arsenic chemicals should be done in a properly designated area with secondary containment and proper labeling. 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 415-206-8522 (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 415-206-8522 (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 1-800-222-1222 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.
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 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, 415-885-7580, 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://www.ehs.ucsf.edu/safety-data-sheet-sds-1
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
Any deviation from this SOP requires approval from the Principal Investigator.
Cobalt arsenate 1 Date: Click here to enter a date.
Modified from SOP templates developed by UCLA EH&S (http://www.sop.ehs.ucla.edu/)