Sodium cuprocyanide

  • Disodium tri(cyano-C)cuprate(2-)
  • Sodium cuprocyanide, solution (UN 2317)
Formula
C3CuN3.2Na
Structure
Description
A white powder.
Uses
Used for preparing and maintaining copper plating baths.

Registry Numbers and Inventories.
CAS
14264-31-4
EC (EINECS/ELINCS)
238-155-3
RTECS
GS2169400
RTECS class
Other
UN (DOT)
2316, 2317
Beilstein/Gmelin
36094 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3CuN3Na2
Formula mass
187.58
Density
1.01 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Store in a cool, dry location, away from from heat and incompatible materials.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.
Protection
Wear appropriate chemical protective clothing.
Respirators
Wear positive pressure self-contained breathing apparatus.
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Vapor knockdown water is corrosive or toxic and should be diked for containment. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Add dilute caustic soda (NaOH). Add calcium hypochlorite (Ca(ClO)2).
Stability
Stable.
Incompatibilities
Chlorates, nitrates, strong mineral acids, strong organic acids, strong oxidizing agents, weak alkalies.
Decomposition
Hydrogen cyanide.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Use foam, dry chemical, or carbon dioxide. Use water spray to knock-down vapors.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Health.
Exposure limit(s)
NIOSH REL*: TWA 1 mg/m3 OSHA PEL*: TWA 1 mg/m3 [*Note: REL and PEL also apply to other copper compounds (as Cu) except copper fume.] IDLH 100 mg/m3 (as Cu)
Exposure effects
   Ingestion
Swallowing this material may be harmful or fatal. Symptoms may include severe stomach and intestinal irritation (nausea, vomiting, diarrhea), abdominal pain, and vomiting of blood. Swallowing this material may cause burns and destroy tissue in the mouth, throat, and digestive tract. Low blood pressure and shock may occur as a result of severe tissue injury.
   Inhalation
This material is a dust or may produce dust. Breathing this material may be harmful or fatal. Symptoms usually occur at air concentrations higher than the recommended exposure limits.
   Skin
Can cause skin irritation. Symptoms may include redness and burning of skin, and other skin damage. Passage of this material into the body through the skin is possible, and skin contact may be harmful. Passage of this material into the body through the skin is possible, and may add to toxic effects from breathing or swallowing.
   Eyes
Can cause permanent eye injury. Symptoms include stinging, tearing, redness, and swelling of eyes. Can injure the cornea and cause blindness.

First aid
 
   Ingestion
Seek immediate medical attention. Do not induce vomiting. Vomiting will cause further damage to the mouth and throat. If individual is conscious and alert, immediately rinse mouth with water and give milk or water to drink. If possible, do not leave individual unattended.
   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
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2316, 2317
Response guide
Hazard class
6.1
Packing Group
I
 
Std. Transport #
4923456