Lead thiocyanate

  • Lead dithiocyanate
  • Lead(ii) thiocyanate
  • Lead isothiocyanate
  • Lead sulfocyanate
Formula
Pb(SCN)2
Structure
Description
A white to yellow crystalline solid.
Uses
Reverse dyeing with aniline black, manufacture of safety matches & cartridges.

Registry Numbers and Inventories.
CAS
592-87-0
EC (EINECS/ELINCS)
209-774-6
UN (DOT)
2291
Merck
12,5450
Beilstein/Gmelin
3687984
Beilstein Reference
4-03-00-00299
RCRA
D008
Swiss Giftliste 1
G-9637
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
2CNS*Pb
Formula mass
323.35
Melting point, °C
190
Decomposition point, °C
190
Density
3.82 g/cm3
Solubility in water
0.05 g/100 ml @ 20 C

Hazards and Protection.
Storage
Store at in cool, dry place, away from oxidizing materials.
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
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
Slight.
Incompatibilities
Avoid contact with strong oxidizers, hydrogen peroxide, and the active metals, sodium and potassium.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Slightly flammable. Flammable when exposed to heat or flame.
Combustion products
Irritating sulfur dioxide gas may form in fire.
Health
1
 
Flammability
1
 
 
Reactivity
1
 

Health.
Exposure limit(s)
50 µg/m3 PEL
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
Chronic lead exposure: abdominal pain, nausea, anorexia, vomiting, constipation, diarrhea, and a metallic taste in the mouth have been reported with chronic toxicity. Severe and paroxysmal colic characterized by a rigid and retracted abdomen may occur.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Acute exposure - activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Consider gastric lavage in patients with recent ingestion of liquid or powdered products.
   Inhalation
Move victim to fresh air. 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.
   Skin
Wash well with soap and water.
   Eyes
Flush with water for at least 15 min.

Transport.
UN number
2291
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
LTC
 
Std. Transport #
4966356