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MATERIAL SAFETY DATA SHEET

I            PRODUCT IDENTIFICATION

Trade Name:                    Yttrium Carbide                                                            Chemical Nature:             Metal Carbide

Molecular Formula:        YC₂                                                                               Molecular Weight:           112.93

CAS#:                                12071-35-1                                                                   TSCA:                               Listed

II           HAZARDOUS INGREDIENTS

Hazardous Ingredients: Yttrium Carbide                                                             %: 100.0 

TLV: 1 mg/m³ (for yttrium)                                                                                   OSHA PEL: 1 mg/m³

HMIS Hazard Rating: Health: 1               Flammability: 2                             Reactivity: 1

III         PHYSICAL DATA

Boiling Point 760 mm Hg:             N/D                                                                 Vapor Pressure:               N/A

Melting Point:                                 N/D                                                                 Density:                             4.13

% Volatiles by Volume:                 N/A                                                                Evaporation Rate:           N/D (H₂O=1)

Appearance and Odor:                  yellow pieces, no odor

Reaction With Water:                    Decomposes in water with evolution of a mixture of hydrocarbons.

IV         FIRE AND EXPLOSION HAZARDS DATA

Flash Point (Method used): N/A                                                                          Autoignition Temperature: N/A

Flammable Limits: Upper: N/A  Lower: N/A                                                   Flammability: A potentially flammable solid

Extinguishing Media: Agent for metal fires (like G-1 powder, MET-L-X or TEC

Special Fire Fighting Procedures: Do not use water

Unusual Fire & Explosion Hazard: A potentially flammable solid

Toxicity Data: No Data

V           HEALTH HAZARD INFORMATION

Personal Protection: Yes                                                                                      Routes of Entry: Inhalation

Effects of Over Exposure (Acute and Chronic):

Inhalation: Yttrium and compounds have caused pulmonary irritation in test animals. Diffuse pulmonary fibrosis has also been

reported.

Dermal/Eye Contact: Mild irritation to the skin and eye.

Other: No data specifically for this chemical. Yttrium compounds have been reported to produce liver injury in test animals. As a

lanthanide, yttrium may affect blood clotting time.

Medical Conditions Generally Aggravated by Exposure: Chronic respiratory disease may be aggravated by exposure.

Carcinogenicity: None

EMERGENCY AND FIRST AID PROCEDURES:

INGESTION: Induce vomiting. Seek medical attention.

INHALATION: Remove to fresh air. If not breathing, give artificial respiration. Get medical attention. (problem for dust only).

SKIN: Flush with soap and water.

EYES: Flush with plenty of water for at least 15 minutes.

VI         REACTIVITY DATA

Stability: Unstable

Conditions Contributing to Instability: None

Incompatibility (Material to Avoid): Strong acids, strong oxidizers, moisture.

Hazardous Decomposition Products (Thermal and Other): Acetylene gas in contact with moisture.

Hazardous Polymerization: Will not occur

Hazardous Decomposition Products: Acetylene gas in contact with moisture.

Conditions to Avoid: Moisture

VII        SPILL OR LEAK PROCEDURES

Steps to Be Taken If Spilled or Released: Absorb with sand or inert material. Neutralize. Sweep or scoop up and remove.

Waste Disposal Method: In accordance with Local, State and Federal Waste Disposal Regulations. React and neutralize the YC₂

by the slow and careful ordered addition of water and NaHSO₄. The neutral product can now be washed down the drain with ample water supply.

VIII      SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): If dust is being generated, air purifying respirator should be worn.

Ventilation: Local Exhaust: Handle in dry-box or glove-bag if possible, to prevent contact with air or moisture.

Mechanical(General): Not Recommended

Protective Gloves: neoprene                                                                                  Eye Protection: goggles 

Other Protective Equipment/Practices: Normal lab wear

IX         SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storing: Wash thoroughly after handling. Keep container closed. Store in a tightly closed container. Empty container may contain hazardous residues. Keep dry; flammable solid.

Transportation Requirements:

DOT Class: Flammable Solid (N.O.S)                                      UN Number: 1325                        IMCO Class: 4.3

              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

Issue Date:           July 1986