SIGMA CHEMICAL -- 26291-9 TANTALUM,99.9+% 
MATERIAL SAFETY DATA SHEET
NSN: 681000F045346
Manufacturer's CAGE: 21076 
Part No. Indicator: A 
Part Number/Trade Name: 26291-9 TANTALUM,99.9+% 
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                            General Information
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Company's Name: SIGMA CHEMICAL COMPANY 
Company's Street: 3050 SPRUCE ST 
Company's P. O. Box: 14508 
Company's City: SAINT LOUIS 
Company's State: MO 
Company's Country: US 
Company's Zip Code: 63178-5000 
Company's Emerg Ph #: 314-771-5765/800-325-3010 
Company's Info Ph #: 314-771-5765/800-325-3010 
Distributor/Vendor # 1: ALDRICH CHEMICAL CO SUB OF SIGMA-ALDRICH 
Distributor/Vendor # 1 Cage: 60928 
Distributor/Vendor # 2: FLUKA CHEMICAL CORP 
Distributor/Vendor # 2 Cage: 63181 
Record No. For Safety Entry: 001 
Tot Safety Entries This Stk#: 001 
Status: SE 
Date MSDS Prepared: 01AUG95 
Safety Data Review Date: 07DEC95 
Preparer's Company: SIGMA CHEMICAL COMPANY 
Preparer's St Or P. O. Box: 3050 SPRUCE ST 
Preparer's City: SAINT LOUIS 
Preparer's State: MO 
Preparer's Zip Code: 63178-5000 
MSDS Serial Number: BYLNF 
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                     Ingredients/Identity Information
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Proprietary: NO 
Ingredient: TANTALUM
Ingredient Sequence Number: 01 
Percent: >99.9 
NIOSH (RTECS) Number: WW5505000 
CAS Number: 7440-25-7 
OSHA PEL: 5 MG/CUM 
ACGIH TLV: 5 MG/CUM 
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                     Physical/Chemical Characteristics
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Appearance And Odor: SHINY SILVER FOIL
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                      Fire and Explosion Hazard Data
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Extinguishing Media: USE MEDIA APPROPRIATE FOR SURROUNDING AREAS.
Special Fire Fighting Proc: WEAR SCBA & PROTECTIVE CLOTHING.
Unusual Fire And Expl Hazrds: EMITS TOXIC FUMES UNDER FIRE CONDITIONS.
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                              Reactivity Data
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Stability: YES 
Materials To Avoid: STRONG BASES, HYDROGEN FLUORIDE
Hazardous Poly Occur: NO 
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                            Health Hazard Data
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Route Of Entry - Inhalation: YES 
Route Of Entry - Skin: YES 
Route Of Entry - Ingestion: YES 
Health Haz Acute And Chronic: MAY BE HARMFUL BY INHALATION, INGESTION/SKIN
ABSORPTION. CAUSES EYE & SKIN IRRITATION. MATERIAL IS IRRITATING TO MUCOUS
MEMBRANES & UPPER RESPIRATORY TRACT.
Carcinogenicity - NTP: NO 
Carcinogenicity - IARC: NO 
Carcinogenicity - OSHA: NO 
Explanation Carcinogenicity: NONE
Signs/Symptoms Of Overexp: IRRITATION.
Emergency/First Aid Proc: EYES: IMMEDIATELY WASH W/COPIOUS AMOUNTS OF
WATER FOR 15 MINS. SKIN: FLUSH W/WATER. INHALATION: REMOVE TO FRESH AIR.
OBTAIN MEDICAL ATTENTION IN ALL CASES.
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                   Precautions for Safe Handling and Use
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Steps If Matl Released/Spill: SWEEP UP, PLACE IN A BAG & HOLD FOR WASTE
DISPOSAL.
Waste Disposal Method: MATERIAL IN THE ELEMENTAL STATE SHOULD BE RECOVERED
FOR REUSE/RECYCLING. DISPOSE OF IAW/FEDERAL, STATE & LOCAL REGULATIONS.
Precautions-Handling/Storing: KEEP CONTAINER CLOSED.
Other Precautions: AVOID CONTACT & INHALATION.
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                             Control Measures
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Respiratory Protection: WEAR NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation: MECHANICAL EXHAUST REQUIRED
Protective Gloves: CHEMICAL RESISTANT 
Eye Protection: CHEMICAL SAFETY GOGGLES 
Other Protective Equipment: SAFETY SHOWER, EYE BATH.
Work Hygienic Practices: WASH THOROUGHLY AFTER HANDLING.
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                            Transportation Data
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                               Disposal Data
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                                Label Data
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Label Required: YES 
Label Status: G 
Common Name: 26291-9 TANTALUM,FOIL,0.025MM THICK,99.9+% 
Special Hazard Precautions: MAY BE HARMFUL BY INHALATION, INGESTION/SKIN
ABSORPTION. CAUSES EYE & SKIN IRRITATION. MATERIAL IS IRRITATING TO MUCOUS
MEMBRANES & UPPER RESPIRATORY TRACT. IRRITATION.
Label Name: SIGMA CHEMICAL COMPANY 
Label Street: 3050 SPRUCE ST 
Label P.O. Box: 14508 
Label City: SAINT LOUIS 
Label State: MO 
Label Zip Code: 63178-5000 
Label Country: US 
Label Emergency Number: 314-771-5765/800-325-3010 

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