Calcium cyanamide

  • Calcium carbamide
Formula
CaCN2
Structure
Description
A colorless to gray, odorless solid.
Uses
Herbicide, plant growth regulator.

Registry Numbers and Inventories.
CAS
156-62-7
EC (EINECS/ELINCS)
205-861-8
EC Index Number
615-017-00-4
EC Class
Harmful; Irritant
RTECS
GS6000000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Human Data
UN (DOT)
1403
Merck
12,1702
Beilstein/Gmelin
3912122
Beilstein Reference
4-03-00-00145
EPA OPP
14001
Swiss Giftliste 1
G-1021
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CN2*Ca
Formula mass
80.1
Melting point, °C
1300
Density
2.36 g/cm3
Solubility in water
Insoluble, decomposes

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
Emergency eye-flushing installations should be provided.
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Keep material dry. Do not use water on material itself. 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. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Remove trapped material with suction hoses.
Stability
No data.
Incompatibilities
Reacts as bases to neutralize acids.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Do not use water on material itself. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Pure form is nonflammable, but cancn is a fire risk if exposed to moisture so that flammable h2ncn can form. The calcium carbide in the commercial grade can form flammable acetylene in the presence of moisture.
Hazards
Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
Combustion products
If exposed to water or high temperature, may generate toxic and flammable fumes.
 
Special
W

Health.
Exposure limit(s)
NIOSH REL: TWA 0.5 mg/m3
Poison_Class
4
Exposure effects
Rapid heart rate may occur. Abnormally low blood pressure and low heart rate are rare. Headache, dizziness, fatigue, vertigo, and coma may be part of the disulfiram-like reaction.
   Inhalation
Inhalation or contact with vapors, substance, or decomposition products may cause severe injury or death.
   Skin
Dermal irritation and sensitization may occur.
   Eyes
May cause mucosal irritation.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
1403
Response guide
Hazard class
4.3
Packing Group
III
 
USCG CHRIS Code
CCM
 
Std. Transport #
4916326