OSHA/EPA Occupational Chemical Database

Chemical Identification
Chemical Name: CALCIUM ARSENATE
CAS #: 7778-44-1 UN No: 1573 Formula: AsH3O4.3/2Ca
Synonyms: Calcium salt (2:3) of arsenic acid; Cucumber dust; Tricalcium arsenate; Tricalcium ortho-arsenate

Physical Properties
Physical Description: Colorless to white, odorless solid. [insecticide/herbicide]
BP: Decomposes MW: 398.1 LEL: NA NFPA Fire Rating: NA
FRZ/MLT: FRZ: NA VP: 0 mmHg (approx) UEL: NA NFPA Health Rating: NA
FP: NA VD: NA NFPA Reactivity Rating: NA
Sp. GR: 3.62 IP: NA NFPA Sp. Inst.: NA

Exposure Limits
OSHA NIOSH Related Information
PEL-TWA ppm: NA REL-TWA ppm: NA AIHA Emergency Response Planning Guidelines - ERPG-1/ERPG-2/ERPG-3:
NA
PEL-TWA mg/m3: 0.01 REL-TWA mg/m3: NA
PEL-STEL ppm: NA REL-STEL ppm: NA
PEL-STEL mg/m3: NA REL-STEL mg/m3: NA
PEL-C ppm: NA REL-C ppm: NA
PEL-C mg/m3: NA REL-C mg/m3: 0.002 Carcinogen Classifications: NIOSH-Ca, OSHA-Ca
Skin Notation: No Skin Notation: No
Notes: as As, SEE 29 CFR 1910.1018 Notes: CARCINOGEN (Ca); as As; 15 MINUTE CEILING

IDLH ppm: NA

IDLH mg/m3: 5

IDLH Notes: Ca

NIOSH Pocket Guide to Chemical Hazards (Current through June 2006)
Calcium arsenate (as As) CAS: 7778-44-1
Formula: Ca3(AsO4)2 RTECS: CG0830000
Synonyms & Trade Names: Calcium salt (2:3) of arsenic acid, Cucumber dust, Tricalcium arsenate, Tricalcium ortho-arsenate DOT ID & Guide: 1573 151
Exposure Limits
NIOSH REL: Ca C 0.002 mg/m3 [15-minute] See Appendix A OSHA PEL: [1910.1018] TWA 0.010 mg/m3
IDLH: Ca [5 mg/m3 (as As)] Conversion: NA
Physical Description
Colorless to white, odorless solid. [insecticide/herbicide]
MW: 398.1 BP: Decomposes MLT: ? Sol(77F): 0.01%
VP: 0 mmHg (approx) IP: NA RGasD: NA Sp.Gr: 3.62
Fl.P: NA UEL: NA LEL: NA MEC: NA
Noncombustible Solid (See flammable and combustible liquid classes)
Incompatibilities & Reactivities
None reported [Note: Produces toxic fumes of arsenic when heated to decomposition.]
Measurement Methods
NIOSH 7900; OSHA ID105
Personal Protection & Sanitation First Aid
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contam/Daily
Remove: When wet or contam
Change: Daily
Provide: Eyewash, Quick drench
Eye: Irr immed
Skin: Soap wash prompt
Breath: Resp support
Swallow: Medical attention immed
(See procedures)
NIOSH Respirator Recommendations
NIOSH : SCBAF:PD,PP/SAF:PD,PP:ASCBA Escape: HiEF/SCBAE
(See symbols and codes)
Exposure Routes
Inh Abs Ing Con
Symptoms
Weak; GI dist; peri neur; skin hyperpig, palmar planter hyperkeratoses; derm; [carc]; in animals: liver damage
(See abbreviations)
Target Organs
Eyes, resp sys, liver, skin, CNS, lymphatic sys
(See abbreviations)

DOT Emergency Response Guidebook (ERG 2004)
Guide Number: 151
151 Substances - Toxic (Non-Combustible)
POTENTIAL HAZARDS
HEALTH
*       Highly toxic, may be fatal if inhaled, swallowed or absorbed through
        skin.
*       Avoid any skin contact.
*       Effects of contact or inhalation may be delayed.
*       Fire may produce irritating, corrosive and/or toxic gases.
*       Runoff from fire control or dilution water may be corrosive and/or
        toxic and cause pollution.
FIRE OR EXPLOSION
*       Non-combustible, substance itself does not burn but may decompose upon
        heating to produce corrosive and/or toxic fumes.
*       Containers may explode when heated.
*       Runoff may pollute waterways.
PUBLIC SAFETY
*       CALL Emergency Response Telephone Number on Shipping Paper first. If
        Shipping Paper not available or no answer, refer to appropriate
        telephone number listed on the inside back cover.
*       Isolate spill or leak area immediately for at least 25 to 50 meters
        (80 to 160 feet) in all directions.
*       Keep unauthorized personnel away.
*       Stay upwind.
*       Keep out of low areas.
PROTECTIVE CLOTHING
*       Wear positive pressure self-contained breathing apparatus (SCBA).
*       Wear chemical protective clothing which is specifically recommended by
        the manufacturer. It may provide little or no thermal protection.
*       Structural firefighters' protective clothing provides limited
        protection in fire situations ONLY; it is not effective in spill
        situations.
EVACUATION
Spill
*       See the Table of Initial Isolation and Protective Action Distances for
        highlighted substances. For non-highlighted substances, increase, in
        the downwind direction, as necessary, the isolation distance shown
        under PUBLIC SAFETY.
Fire
*       If tank, rail car or tank truck is involved in a fire, ISOLATE for
        800 meters (1/2 mile) in all directions; also, consider initial
        evacuation for 800 meters (1/2 mile) in all directions.
EMERGENCY RESPONSE
FIRE
Small Fires
*       Dry chemical, CO2 or water spray.
Large Fires
*       Water spray, fog or regular foam.
*       Move containers from fire area if you can do it without risk.
*       Dike fire control water for later disposal; do not scatter the
        material.
*       Use water spray or fog; do not use straight streams.
Fire involving Tanks or Car/Trailer Loads
*       Fight fire from maximum distance or use unmanned hose holders or
        monitor nozzles.
*       Do not get water inside containers.
*       Cool containers with flooding quantities of water until well after
        fire is out.
*       Withdraw immediately in case of rising sound from venting safety
        devices or discoloration of tank.
*       ALWAYS stay away from tanks engulfed in fire.
*       For massive fire, use unmanned hose holders or monitor nozzles; if this
        is impossible, withdraw from area and let fire burn.
SPILL OR LEAK
*       Do not touch damaged containers or spilled material unless wearing
        appropriate protective clothing.
*       Stop leak if you can do it without risk.
*       Prevent entry into waterways, sewers, basements or confined areas.
*       Cover with plastic sheet to prevent spreading.
*       Absorb or cover with dry earth, sand or other non-combustible material
        and transfer to containers.
*       DO NOT GET WATER INSIDE CONTAINERS.
FIRST AID
*       Move victim to fresh air.
*       Call 911 or emergency medical service.
*       Apply artificial respiration if victim is not breathing.
*       Do not use mouth-to-mouth method if victim ingested or inhaled the
        substance; induce artificial respiration with the aid of a pocket mask
        equipped with a one-way valve or other proper respiratory medical
        device.
*       Administer oxygen if breathing is difficult.
*       Remove and isolate contaminated clothing and shoes.
*       In case of contact with substance, immediately flush skin or eyes with
        running water for at least 20 minutes.
*       For minor skin contact, avoid spreading material on unaffected skin.
*       Keep victim warm and quiet.
*       Effects of exposure (inhalation, ingestion or skin contact) to
        substance may be delayed.
*       Ensure that medical personnel are aware of the material(s) involved,
        and take precautions to protect themselves.

Additional Emergency Response Information (CAMEO Data)
Non-fire Spill Response: Keep material out of water sources and sewers. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Add ferric chloride (FeCl3). Adjust pH to neutral (pH=7). Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates. ( AAR, 1999)
Firefighting: Stay upwind; keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing.Not flammable. For small fires, use dry chemical, water spray, or foam. For large fires, use water spray, fog, or foam. (EPA, 1998)
Reactivity: This compound is incompatible with the following:None reported [Note: Produces toxic fumes of arsenic when heated to decomposition.] (NIOSH, 1997)
First Aid: Warning: Effects usually appear within 30 minutes of exposure but may be delayed for several hours. Caution is advised. Signs and Symptoms of Acute Calcium Arsenate Exposure: Hypotension (low blood pressure), tachycardia (rapid heart rate), dehydration, intense thirst, difficulty swallowing, vomiting, abdominal pain, and diarrhea are among the first signs and symptoms noticed following acute calcium arsenate exposure. Headache, conjunctivitis (red, inflamed eyes), runny nose, and lacrimation (tearing) are also common. Garlic odor of breath and feces may be noted. Cardiovascular effects include shock, tachycardia (rapid heart rate), ventricular fibrillation, and other cardiac abnormalities. Pulmonary edema may occur. Altered mental status, seizures, and delirium are further complications of calcium arsenate exposure. Intense muscle cramping is common. Exposure to airborne dust is generally accompanied by irritation of exposed skin, eyes, and mucous membranes. Emergency Life-Support Procedures: Acute exposure to calcium arsenate may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination. Inhalation Exposure: 1. Move victims to fresh air. Emergency personnel should avoid self-exposure to calcium arsenate. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. RUSH to a health care facility! 4. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. Dermal/Eye Exposure: 1. Remove victims from exposure. Emergency personnel should avoid self- exposure to calcium arsenate. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. Remove contaminated clothing as soon as possible. 4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes. 5. THOROUGHLY wash exposed skin areas with soap and water. 6. RUSH to a health care facility! 7. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. Ingestion Exposure: 1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 2. RUSH to a health care facility! 3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. 4. Vomiting may be induced with syrup of Ipecac. If elapsed time since ingestion of calcium arsenate is unknown or suspected to be greater than 30 minutes, do not induce vomiting and proceed to Step 5.Ipecac should not be administered to children under 6 months of age. Warning: Ingestion of calcium arsenate may result in sudden onset of seizures or loss of consciousness. Syrup of Ipecac should be administered only if victims are alert, have an active gag-reflex, and show no signs of impending seizure or coma. If ANY uncertainty exists, proceed to Step 5. The following dosages of Ipecac are recommended: children up to 1 year old, 10 mL (1/3 oz); children 1 to 12 years old, 15 mL (1/2 oz); adults, 30 mL (1 oz). Ambulate (walk) the victims and give large quantities of water. If vomiting has not occurred after 15 minutes, Ipecac may be readministered. Continue to ambulate and give water to the victims. If vomiting has not occurred within 15 minutes after second administration of Ipecac, administer activated charcoal. 5. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g (1/2 to 1 oz) for children, 50 to 100 g (1-3/4 to 3-1/2 oz) for adults, with 125 to 250 mL (1/2 to 1 cup) of water. 6. Promote excretion by administering a saline cathartic or sorbitol to conscious and alert victims. Children require 15 to 30 g (1/2 to 1 oz) of cathartic; 50 to 100 g (1-3/4 to 3-1/2 oz) is recommended for adults. (EPA, 1998)