Sodium Arsenite

Chemical Name: CAS #:
Hazard Classification:
Location Used: Principal Investigator:
Processes for Which Chemical Is Used:
HAZARDS AND PROTECTION
Hazard Information
• Acute oral, dermal and inhalation toxicity
• Organ Toxicity
Routes of Exposure
• Ingestion
• Inhalation
• Skin absorption
If exposed by:
• Inhalation: Remove to fresh air. Do not use
mouth to mouth; give artificial respiration
through pocket mask, one-way valve or other
respiratory medical device
• Ingestion: Do not induce vomiting.
• Eye or skin: Rinse with plenty of water for 15
minutes.
If exposed by any route, seek immediate medical
attention.
Symptoms of Exposure
• Exposure can be fatal.
• May cause headaches, nausea and vomiting.
Prolonged exposure can cause brain damage.
• May cause eye, skin and respiratory tract
irritation
Exposure Limits
All exposure limits are Time Weighted Averages
(average exposure over an eight-hour day) unless
otherwise indicated.
OSHA PEL: None indicated
ACGIH TLV: 0.002 ppm (0.01 mg/m3
)
NIOSH IDLH: 5 ppm (26.6 mg/m3
)
Engineering Controls
• Chemical Fume Hood Never open sodium arsenite outside of a chemical
fume hood.
Administrative Controls
• Designated area sign
• Particularly hazardous substance label
• Post designated area sign before each use.
• Label containers of sodium arsenite as a
health hazard.
• Use as small a quantity as possible.
Sodium arsenite 7784-46-5
Health Hazard
ARKANSAS STATE UNIVERSITY EHS
LABORATORY CHEMICAL STANDARD OPERATING PROCEDURE
CS-007 Last Reviewed July 8, 2019
Personal Protective Equipment
• Gloves
• Safety glasses (for dry chemical) or splash
goggles (for solutions)
• Lab coat
• Tyvek sleeves (for amounts exceeding 5
grams).
Two pairs of nitrile gloves must be worn when
handling sodium arsenite. Wash hands immediately
after use. Splash goggles must be worn when working
with solutions of sodium arsenite greater than 1%.
OTHER SAFETY INFORMATION
Transportation Follow guidance given in the laboratory safety manual
for transport of chemicals.
Storage
• Can be stored with other dry chemicals but in
a dedicated section for toxic chemicals.
• Keep away from heat and open flames.
Incompatible materials include:
Strong oxidizing agents, strong acids
Spill/Accident Procedures
For all spills:
• Wear two pairs of nitrile gloves, safety glasses
and lab coat
• Evacuate the immediate area
Exposure:
• If anyone exposed requires emergency
medical attention, dial 911 (or 9-911 from
landline).
• Follow procedures outlined in laboratory
safety manual.
Small spills (less than 10 g in a hood): Small spills may
be cleaned by sweeping up dry powder and placing
them in a container. If the spill is a liquid, cover with
absorbent material and then place the absorbent
material container. Clean area with soap and water
once spill is removed.
Large spills (greater than 10 g in a hood or any
amount outside a fume hood): If the spill is in a
chemical fume hood, contact the EHS director (864-
710-2933). If he cannot be reached (does not answer
phone, do not leave voicemail), then call 911, pull the
fire alarm and exit the building. If the spill is outside of
a hood, then call 911, pull the fire alarm and exit the
building.
Waste Disposal Waste sodium arsenite must be collected for disposal.
By signing below, you indicate that you have reviewed this SOP and understand the contents thereof:
ARKANSAS STATE UNIVERSITY EHS
LABORATORY CHEMICAL STANDARD OPERATING PROCEDURE
CS-007 Last Reviewed July 8, 201