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121954-50-5

121954-50-5 structure
121954-50-5 structure

Name ditert-butyl-[[2-(ditert-butylphosphanylmethyl)phenyl]methyl]phosphane
Synonyms [1,2-Phenylenebis(methylene)]bis[bis(2-methyl-2-propanyl)phosphine]
1,2-bis(ditertbutylphosphinomethyl)benzene
MFCD03094573
Phosphine, 1,1'-[1,2-phenylenebis(methylene)]bis[1,1-bis(1,1-dimethylethyl)-
1,2-Bis(di-tert-butyl phosphinomethyl)benzene
Boiling Point 456.7±38.0 °C at 760 mmHg
Melting Point 59-62ºC
Molecular Formula C24H44P2
Molecular Weight 394.554
Flash Point 243.6±33.1 °C
Exact Mass 394.291809
PSA 27.18000
LogP 8.05
Appearance crystal | white
Vapour Pressure 0.0±1.1 mmHg at 25°C

Section 1: Product Identification
Chemical Name:alpha,alpha'-Bis(di-t-butylphosphino)-o-xylene, min. 97%
CAS Registry Number:121954-50-5
Formula:C6H4[CH2P(C4H9)2]2
EINECS Number:none
Chemical Family:organophosphine ligand
Synonym:1,2-Bis(di-t-butylphosphinomethyl)benzene

Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title compound121954-50-5100%no datano data

Section 3: Hazards Identification
Emergency Overview:Irritating to skin, eyes and respiratory tract. May be harmful if swallowed.
Primary Routes of Exposure:Ingestion, inhalation
Eye Contact:Causes slight to mild irritation of the eyes
Skin Contact:Causes slight to mild irritation of the skin.
Inhalation:Irritating to the nose, mucous membranes and respiratory tract.
Ingestion:No specific information is available on the physiological effects of ingestion. May be harmful if swallowed.
Acute Health Affects:Irritating to skin, eyes and respiratory tract.
Chronic Health Affects:No information available on the effects of long-term exposure.
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:no data
Autoignition Temperature:none
Explosion Limits:none
Extinguishing Medium:carbon dioxide, dry powder or foam
If this material is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
Special Fire Fighting Procedures:
self-contained breathing apparatus and full protective clothing.
Hazardous Combustion andIf involved in a fire this material may emit toxic organic fumes.
Decomposion Products:
Unusual Fire or Explosion Hazards: Flammable solid. No unusual fire or explosion hazards.

SECTION 6: Accidental Release Measures
Spill and Leak Procedures:Small spills can be mixed with vermiculite or sodium carbonate and swept up.

SECTION 7: Handling and Storage
Handling and Storage:Material will degrade on exposure to air. Handle and store under an inert atmosphere of nitrogen or argon.

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.
Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood.
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:Material may form a fine dust. If possible, handle the material in an efficient fume hood.
Additional Protection:No additional protection required.

SECTION 9: Physical and Chemical Properties
Color and Form:white xtl.
Molecular Weight:394.56
Melting Point:59-62°
Boiling Point:no data
Vapor Pressure:no data
Specific Gravity:no data
Odor:no data
Solubility in Water:no data

SECTION 10: Stability and Reactivity
Stability:air-sensitive solid
Hazardous Polymerization:none
Conditions to Avoid:none
Incompatibility:oxidizing agents, halogens
Decomposition Products:carbon dioxide, carbon monoxide, organic fumes, and phosphorus oxides.

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

SECTION 12: Ecological Information
Ecological Information:No information available

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

SECTION 14: Transportation
Shipping Name (CFR):Non-hazardous
Hazard Class (CFR):NA
Additional Hazard Class (CFR):NA
Packaging Group (CFR):NA
UN ID Number (CFR):NA
Shipping Name (IATA):Non-hazardous
Hazard Class (IATA):NA
Additional Hazard Class (IATA):NA
Packaging Group (IATA):NA
UN ID Number (IATA):NA

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


SECTION 16 - ADDITIONAL INFORMATION
N/A
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Risk Phrases R36/37/38
Safety Phrases S26
RIDADR NONH for all modes of transport
WGK Germany 3

~55%

121954-50-5 structure

121954-50-5

Literature: Ineos Acrylics UK Limited Patent: US6335471 B1, 2002 ; Location in patent: Page column 4 ;

~22%

121954-50-5 structure

121954-50-5

Literature: Ineos Acrylics UK Limited Patent: US6335471 B1, 2002 ; Location in patent: Page column 5 ;