31406-67-4

31406-67-4 structure
31406-67-4 structure
  • Name: hafnium(4+),methanidylbenzene
  • Chemical Name: hafnium(4+),methanidylbenzene
  • CAS Number: 31406-67-4
  • Molecular Formula: C28H28Hf
  • Molecular Weight: 543.01200
  • Create Date: 2018-03-23 08:00:00
  • Modify Date: 2024-01-18 20:20:03

Name hafnium(4+),methanidylbenzene
Synonyms halfnium tetrabenzyl
Hafnium,tetrakis(phenylmethyl)-,(T-4)
hafnium tetrabenzyl
tetra(benzyl)hafnium
Hafnium,tetrabenzyl-(8CI)
Melting Point 99-104ºC(lit.)
Molecular Formula C28H28Hf
Molecular Weight 543.01200
Exact Mass 544.16600
LogP 8.00920

Section 1: Product Identification
Chemical Name:Tetrabenzylhafnium, min. 97%
CAS Registry Number:31406-67-4
Formula:C28H28Hf
EINECS Number:none
Chemical Family:organometallic complex
Synonym:none

Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title compound31406-67-4100%0.5mg/m3 (as Hf)0.5mg/m3 (as Hf)

Section 3: Hazards Identification
Emergency Overview:May be irritating to skin, eyes and respiratory tract. May be harmful if swallowed.
Primary Routes of Exposure:Ingestion, inhalation
Eye Contact:May cause slight to mild irritation of the eyes.
Skin Contact:May cause slight to mild irritation of the skin.
Inhalation:May be irritating to the nose, mucous membranes and respiratory tract.
Ingestion:No information is available on the physiological effects of ingestion.
Acute Health Affects:May be irritating to skin, eyes, mucous membranes, and respiratory tract.
Chronic Health Affects:No information available on long-term chronic effects.
NTP:No
IARC:No
OSHA:No

SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.

SECTION 5: Fire Fighting Measures
Flash Point:none
Autoignition Temperature:none
Explosion Limits:none
Extinguishing Medium:carbon dioxide, dry powder or foam
Fire fighters should be equipped with a NIOSH approved positive pressure self-contained breathing apparatus
Special Fire Fighting Procedures:
and full protective clothing.
Hazardous Combustion andIf involved in a fire this material may emit toxic fumes of carbon monoxide, and hafnium oxide.
Decomposion Products:
Unusual Fire or Explosion Hazards: Flammable solid. Evolves flammable tetramethylcyclopentadiene with water.

SECTION 6: Accidental Release Measures
Keep away from sources of ignition. Small spills can be mixed with vermiculite, sodium carbonate or other
Spill and Leak Procedures:
suitable noncombustible adsorbent and swept up. Do not raise dust.

SECTION 7: Handling and Storage
Store the material under an inert atmosphere of nitrogen or argon in a tightly sealed container. Store cold to
Handling and Storage:
maximize shelf life.

SECTION 8: Exposure Controls and Personal Protection
Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection:Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.
Ventilation:Handle the material under an inert atmosphere of nitrogen or argon.
If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation:Handle the material under an inert atmosphere of nitrogen or argon.
Additional Protection:No additional protection required.

SECTION 9: Physical and Chemical Properties
Color and Form:yellow pwdr.
Molecular Weight:543.01
Melting Point:no data
Boiling Point:no data
Vapor Pressure:no data
Specific Gravity:no data
Odor:not determined
Solubility in Water:insoluble

SECTION 10: Stability and Reactivity
Stability:air, moisture and heat sensitive (store cold)
Hazardous Polymerization:no hazardous polymerization
Conditions to Avoid:heat and ignition sources, air, and moisture
Incompatibility:strong oxidizing agents, mineral acids and halogens.
Decomposition Products:hafnium oxide, carbon monoxide, carbon dioxide and organic fumes.

SECTION 11: Toxicological Information
RTECS Data:No information available in the RTECS files.
Carcinogenic Effects:no data
Mutagenic Effects:no data
Tetratogenic Effects:no data

SECTION 12: Ecological Information
Ecological Information:No information available

SECTION 13: Disposal Considerations
Disposal:Dispose of according to federal, state, and local regulations.

SECTION 14: Transportation
Shipping Name (CFR):Flammable solids, Inorganic, N.O.S.
Hazard Class (CFR):4.1
Additional Hazard Class (CFR):NA
Packaging Group (CFR):II
UN ID Number (CFR):UN# 3178
Shipping Name (IATA):Flammable solid, Inorganic, N.O.S.
Hazard Class (IATA):4.1
Additional Hazard Class (IATA):NA
Packaging Group (IATA):II
UN ID Number (IATA):UN# 3178

SECTION 15: Regulatory Information
TSCA:Not listed in the TSCA inventory.
SARA (Title 313):Title compound not listed.
Second Ingredient:none


SECTION 16 - ADDITIONAL INFORMATION
N/A
Risk Phrases 10
Safety Phrases 15-16-36
RIDADR UN 3178
HS Code 2902909090

~61%

31406-67-4 structure

31406-67-4

Literature: Gmelin Handbook: Hf: Org.Verb., 1.1, page 1 - 2

~67%

31406-67-4 structure

31406-67-4

Literature: Univation Technologies, LLC Patent: US7067686 B1, 2006 ; Location in patent: Page/Page column 9-10; 11 ;
HS Code 2902909090
Summary 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%