Lead(II) arsenate

  • Lead arsenate
Formula
As2O8Pb3
Structure
Description
White crystals.
Uses
Used as a constituent of various insecticides for larvae of gypsy moth, boll weevil, etc.

Registry Numbers and Inventories.
CAS
3687-31-8
EC (EINECS/ELINCS)
222-979-5
RTECS
CG0990000
RTECS class
Other
UN (DOT)
1616
Merck
12,5413
Beilstein/Gmelin
132426 (G)
Austrailia AICS
Listed

Properties.
Formula
As2O8Pb3
Formula mass
899.43
Melting point, °C
382
Decomposition point, °C
1042
Odor Threshold Odor threshold Odorless
Density
5.8 g/cm3 (20 C)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
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.
Stability
No data.

Fire.
Fire fighting
SMALL FIRES: Dry chemical, carbon dioxide 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.
Fire potential
These substances will accelerate burning when involved in a fire.
Hazards
Containers may explode when heated. Runoff may pollute waterways.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
10 µg/m3 PEL
Carcinogin
O, I-1, N-1, CP65
Exposure effects
   Ingestion
Toxic if ingestid.
   Inhalation
Inhalation of dust is toxic.
   Skin
May cause severe burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
1616
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
LAR