Niobium Nitride








ESPI Metals

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Product Name:     Niobium Nitride

Formula:              NbN

CAS Number:       24621-21-4




Hazardous Components:  Niobium Nitride

Percent (%):                    0-100

OSHA/PEL:                        N/E

ACGIH/TLV:                       N/E

Other Limits:                     N/E

Hazard Ratings:

Health:                             3

Flammability:                  0

Reactivity:                       2




Boiling Point :                 N/E or N/A

Melting Point:                 2573.0 oC

Specific Gravity:            8.4 gm/cc

Solubility in H2O:           Insoluble

Appearance and Odor:  Black Crystalline Powder, no order.




Explosive LimitsUpper:  N/A          Lower:  N/A

Flash Point:  N/A (Non-Flammable)

Extinguishing Media:  N/A, Use fire extinguishing agent for surrounding material and type of fire.

Special Fire Fighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes.  Fumes form fire are hazardous.  Isolate run off to prevent environmental pollution.

Unusual Fire and Explosion Hazards:  May react with moist air to liberate ammonia gas which can form explosive mixtures with air.




Routes of Entry:  Inhalation, Ingestion, Skin, and Eyes.

Health Hazards (Acute and Chronic):

To the best of our knowledge the chemical, physical and toxicological properties of niobium nitride have not been thoroughly investigated and recorded.  Niobium is considered a rare earth metal.  These metals are moderately to highly toxic.  The symptoms of toxicity of rare earth elements include writhing, ataxia, labored respiration, walking on toes with arched back and sedation.  The rare earth elements exhibit low toxicity by ingestion exposure.  However, the intraperitoneal route is highly toxic while the subcutaneous route is poison to moderately toxic.  The production of skin and lung granulomas after exposure to them requires extensive protection to prevent such exposure (Sax, Dangerous Properties of industrial Materials, eighth edition).

Ammonia gas is a human poison by an unspecified route.  Poison by inhalation, ingestion, and possibly other routes.  An eye, mucous membrane, and systemic irritant by inhalation.  Mutation data reported (Sax, Dangerous Properties of Industrial Materials, eighth edition).

Acute Effects:

Inhalation:  May cause irritation to the upper respiratory system.  Ammonia gas may cause irritation to the nose and throat, dyspnea, bronchial spasms, chest pain, pulmonary edema and pink frothy sputum.

Ingestion:  Considered to have low toxicity by ingestion.  Ammonia gas may cause nausea, vomiting and burns.

Skin:  May cause irritation, Ammonia gas may cause irritation and chemical burns.

Eye:  May cause moderate irritation.  Ammonia gas may cause severe irritation and chemical burns.

Chronic Effects:

Inhalation:  May cause writhing, ataxia, labored respiration, walking on toes with arched back, sedation, pulmonary edema and lung granuloma.  Repeated or prolonged exposure to ammonia gas may cause swelling of the mouth and throat to the point of asphyxiation, permanent injury and death.

Ingestion:  May act as a blood anticoagulant.

Skin:  Repeated or prolonged exposure to ammonia gas may cause tissue damage.

Eye:  Repeated or prolonged exposure to ammonia gas may cause irreversible damage to the conjunctiva, cornea and lens.

Target Organs:  May affect the blood, respiratory system, skin and eyes.

CarcinogenicityNTP:  No      IARC Monographs:  No       OSHA Regulated:  No

LD50/LC50:  No toxicity data recorded.

Signs and Symptoms of Exposure:

Inhalation:  May cause a red, dry throat, coughing, shortness in breath, swelling of mouth and throat.

Ingestion:  May affect the coagulation time of blood, tissue damage, chemical burns, nausea and vomiting.

Skin:  May cause redness, burning, itching, inflamation, blistering and tissue damage.

Eye:  May cause redness, burning, itching, watering, lens opacities and ulceration of the conjunctiva and cornea.

Medical Conditions Generally Aggravated by Exposure:  Pre-existing lung and skin disorders.



EYES:  Flush with copious amounts of water for 15 minutes.  Lifting upper and lower eyelids, seek medical attention.

SKIN:  Remove any contaminated clothing, brush material off of skin, flush with running water, wash carefully with soap and water.  Seek medical attention.

INHALATION/INGESTION:  Remove from exposure, keep warm and quiet, seek immediate medical attention.  Do not induce vomiting.




Stability:  Stable

Incompatibility (materials to avoid):  Water, Steam and Moisture.

Hazardous Decomposition or Byproducts:  Ammonia Gas

Hazardous Polymerization:  Will not Occur






Steps to Be Taken in Case Material Is Released or Spilled:  Wear appropriate respiratory and protective equipment.  Isolate spill area and provide ventilation.  Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal.  Take care not to raise dust.

Waste Disposal Method:  Dispose of in accordance with Local, State and Federal regulations.

Hazard Label Information:  Store in a cool, dry area in a tightly sealed container.  Store in an inert atmosphere and wash thoroughly after handling.

Other Precautions:  Niobium nitride may be moisture sensitive, handle and store under argon or other inert gas.




Respiratory Protection (Specify Type):  NIOSH approved dust and vapor cartridge respirator.

Protective Clothing:  Use gloves, advisable to avoid cuts.

Eye Protection:  Safety Goggles or Glasses.

Other Protective Clothing or EquipmentNormal lab wear.

VentilationLocal:  To maintain concentration at low exposure levels.

Mechanical (General): Not Recommended.

Special:  Handle in a controlled atmosphere.




Some of the chemicals listed herein may be hazardous.  Do not handle before reading this MSDS.

Work/Hygienic/Maintenance Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels.  Use good housekeeping and sanitation practices. Do not use tobacco or food in work area.  Wash throughly before eating and smoking.  Do not blow dust off clothing or skin with compressed air.

Other:  Handle in an inert gas such as argon.

TSCA Listed:            Yes

DOT Regulations:

Hazard Class:          None



The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.


Issued by:             S. Dierks

Date:                    June 1991