CAS 857356-94-6 SDS Request & Safety Reference

Preliminary reference disclaimer

This preliminary safety reference is generated from structured MolGraph catalog fields and public reference-style data. It is not a supplier-issued Safety Data Sheet and should not be used as a substitute for supplier-issued documentation, workplace safety review, transport classification, or regulatory compliance decisions. For supplier SDS or COA, submit a documentation request through MolGraph.

Documentation status

Preliminary safety reference

Available

Supplier-issued SDS

Available by request

COA

Available by RFQ / lot confirmation

Transport classification

Requires shipment review

Identity

CAS Number

857356-94-6

Chemical name

Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine , Me4-tBu-Xphos

Molecular formula

C33H53P

Molecular weight

480.75 g/mol

Synonyms

di-tert-butyl[3,4,5,6-tetramethyl-2',4',6'-tris(propan-2-yl)-[1,1'-biphenyl]-2-yl]phosphane; di-tert-butyl(3,4,5,6-tetramethyl-2',4',6'-tris(propan-2-yl)-(1,1'-biphenyl)-2-yl)phosphane; 813-582-3; Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine; 2-Di-tert-butylphosphino-3,4,5,6-tetramethyl-2',4',6'-triisopropyl-1,1'-biphenyl; Me4tButylXphos

InChIKey

RCRYEYMHBHPZQD-UHFFFAOYSA-N

PubChem CID

11953610

Hazard / GHS Reference

Signal word

Warning

Catalog reference cue; confirm supplier documentation before use.

GHS Pictograms

Catalog reference cue; confirm supplier documentation before use.

Hazard statements

H315, H319, H335

Catalog reference cue; confirm supplier documentation before use.

Handling & PPE

Avoid contact with skin and eyes.
Avoid dust and aerosol formation; provide suitable exhaust ventilation where dust may be generated.
Store tightly closed, dry, well ventilated, under inert atmosphere, at room temperature when specified by supplier SDS.
Confirm supplier SDS before handling, storage, transport, or workplace use.
Wear chemical safety glasses with side shields or equivalent eye protection.
Wear suitable protective gloves and inspect gloves before use.
Wear protective clothing selected for the workplace hazard level.
Use appropriate respiratory protection if risk assessment or supplier SDS requires it.
Dispose of contents and containers through a licensed chemical waste contractor.

First Aid / Accidental Release

If inhaled, move the person to fresh air and obtain medical advice when symptoms occur.
For skin contact, wash with soap and plenty of water.
For eye contact, rinse cautiously with water for several minutes and obtain medical advice.
If swallowed, rinse mouth with water; do not give anything by mouth to an unconscious person.
Use personal protective equipment and ensure adequate ventilation during cleanup.
Avoid dust formation and avoid breathing vapors, mist, gas, or dust.
Prevent release to drains where supplier SDS indicates environmental precautions.
Collect material without creating dust and place it in a suitable closed container for disposal.
Dispose of contents and containers through a licensed chemical waste contractor.

Firefighting / Stability

Use extinguishing media appropriate to the surrounding fire and supplier SDS instructions.
Firefighters should wear self-contained breathing apparatus when necessary.
Hazardous decomposition product cues include carbon dioxide, carbon monoxide; confirm supplier SDS for complete details.
Stable under recommended storage conditions when the supplier SDS indicates stability.
Avoid incompatible materials and conditions listed in the supplier SDS.

Physical and Chemical Reference

Physical property reference values are not available in the current MolGraph catalog record.

Transport / Shipment Review

GHS Pictograms

Preliminary catalog cue; verify before compliance decisions.

Shipment review

Shipment details require review before fulfillment.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Need supplier documentation?

Request through MolGraph:

Supplier-issued SDS
COA
Purity and pack size confirmation
Availability and lead time review
Shipment documentation review

Catalog-Specific Reference Cues

Research Catalog Compound with Phosphine Ligand (CAS 857356-94-6) is listed for phosphine ligand sourcing for catalyst or coordination screening.
This Phase-1 record frames the material as a phosphine ligand, using an organophosphorus ligand cue as the conservative structure context. confirm supplier SDS and available quality documents before handling, and label COA or spectrum references as available-on-request documentation only.
Typical research procurement context: ligand-focused research workflows where steric and electronic fit are reviewed by the buyer, with buyer review before selection.

Related catalog entries

CAS 2653202-14-1tert-Butyl 6-(3-bromo-4-iodo-5-methyl-1H-pyrazol-1-yl)-2-azaspiro[3.3]heptane-2-carboxylate CAS 2653202-20-9Tert-butyl 6-(4-bromo-3-iodo-5-methylpyrazol-1-yl)-2-azaspiro[3.3]heptane-2-carboxylate CAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamate CAS 1035235-29-03-Fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile CAS 1058062-64-82-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)aniline CAS 1073355-21-12-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)benzonitrile CAS 1084953-47-83-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)pyridine CAS 1096689-46-12-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)pyridine

Identity

CAS Number

857356-94-6

Chemical name

Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine , Me4-tBu-Xphos

Molecular formula

C33H53P

Molecular weight

480.75 g/mol

Synonyms

InChIKey

RCRYEYMHBHPZQD-UHFFFAOYSA-N

PubChem CID

11953610

Handling & PPE

Avoid contact with skin and eyes.
Avoid dust and aerosol formation; provide suitable exhaust ventilation where dust may be generated.
Store tightly closed, dry, well ventilated, under inert atmosphere, at room temperature when specified by supplier SDS.
Confirm supplier SDS before handling, storage, transport, or workplace use.
Wear chemical safety glasses with side shields or equivalent eye protection.
Wear suitable protective gloves and inspect gloves before use.
Wear protective clothing selected for the workplace hazard level.
Use appropriate respiratory protection if risk assessment or supplier SDS requires it.
Dispose of contents and containers through a licensed chemical waste contractor.

First Aid / Accidental Release

If inhaled, move the person to fresh air and obtain medical advice when symptoms occur.
For skin contact, wash with soap and plenty of water.
For eye contact, rinse cautiously with water for several minutes and obtain medical advice.
If swallowed, rinse mouth with water; do not give anything by mouth to an unconscious person.
Use personal protective equipment and ensure adequate ventilation during cleanup.
Avoid dust formation and avoid breathing vapors, mist, gas, or dust.
Prevent release to drains where supplier SDS indicates environmental precautions.
Collect material without creating dust and place it in a suitable closed container for disposal.
Dispose of contents and containers through a licensed chemical waste contractor.

Firefighting / Stability

Use extinguishing media appropriate to the surrounding fire and supplier SDS instructions.
Firefighters should wear self-contained breathing apparatus when necessary.
Hazardous decomposition product cues include carbon dioxide, carbon monoxide; confirm supplier SDS for complete details.
Stable under recommended storage conditions when the supplier SDS indicates stability.
Avoid incompatible materials and conditions listed in the supplier SDS.

Transport / Shipment Review

GHS Pictograms

Preliminary catalog cue; verify before compliance decisions.

Shipment review

Shipment details require review before fulfillment.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Catalog-Specific Reference Cues

Research Catalog Compound with Phosphine Ligand (CAS 857356-94-6) is listed for phosphine ligand sourcing for catalyst or coordination screening.
This Phase-1 record frames the material as a phosphine ligand, using an organophosphorus ligand cue as the conservative structure context. confirm supplier SDS and available quality documents before handling, and label COA or spectrum references as available-on-request documentation only.
Typical research procurement context: ligand-focused research workflows where steric and electronic fit are reviewed by the buyer, with buyer review before selection.

CAS 857356-94-6 Safety Reference and Supplier SDS Request

Documentation status

Identity

Hazard / GHS Reference

Handling & PPE

First Aid / Accidental Release

Firefighting / Stability

Physical and Chemical Reference

Transport / Shipment Review

CAS 857356-94-6 Safety Reference and Supplier SDS Request

Documentation status

Identity

Hazard / GHS Reference

Handling & PPE

First Aid / Accidental Release

Firefighting / Stability

Physical and Chemical Reference

Transport / Shipment Review