Lead sulfate

  • Lead(II) sulfate
  • Fast White
  • Milk white
Formula
PbSO4
Structure
Description
A white crystalline solid.
Uses
Has been used in photography in combination with silver bromide and is used in the stabilization of clay soil for adobe structures, in earth-fill dams, and roads.

Registry Numbers and Inventories.
CAS
7446-14-2
EC (EINECS/ELINCS)
231-198-9
RTECS
OG4375000
RTECS class
Mutagen
UN (DOT)
1794
Merck
12,5444
Beilstein/Gmelin
18674 (G)
RCRA
D008
Swiss Giftliste 1
G-1274
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
O4PbS
Formula mass
303.25
Melting point, °C
1000
Vapor density (air=1)
10.46
Odor Threshold Odor threshold Odorless
Density
6.0631 g/cm3 (18 C)
Solubility in water
Slightly soluble
Thermal expansion
0.000067/K
Heat of fusion
40.35 kJ/mol

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 goggles, self-contained breathing apparatus and rubber gloves.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. 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). If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
No data.
Incompatibilities
Reacts explosively with boric acid.
Decomposition
When heated to decomposition it emits very toxic fumes of lead and sulfur oxides.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Not flammable
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Toxic metal fumes
Health
3
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (as Pb): ppm; 0.05 mg/m3 A3 (ACGIH 1996). MAK: ppm; 0.1 mg/m3; as Pb (1996).
Carcinogin
G-A3, I-2B, CP65
Poison_Class
1
Exposure effects
Chronic lead exposure may cause elevated blood pressure and gout. In young children, developmental defects, including learning disabilities and behavioral abnormalities, can occur without symptoms at blood lead levels above 10 micrograms/deciliter. At higher levels of exposure headache, fatigue, irritability and malaise may occur. At high levels, encephalopathy, seizures and focal neurologic findings with imminent risk of death, permanent mental retardation, and motor deficits may occur. Lead is transferred across the placenta. It can affect reproduction in males and females, and affects neurodevelopmental milestones in children with both prenatal and postnatal exposure.
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
Corrosive. Contact can cause blurred vision, redness, pain and severe tissue burns. Absorption can occur through eye tissues but the more common hazards are local irritation or abrasion.

First aid
 
   Ingestion
If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Get medical attention immediately.
   Inhalation
Remove from source of exposure and keep quiet.
   Skin
Wash with soap and water.
   Eyes
Wash with running water.

Transport.
UN number
1794
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
LSF
 
Std. Transport #
4966970