tris(4-methylphenyl)phosphine oxide

Modify Date: 2025-08-23 11:43:03

tris(4-methylphenyl)phosphine oxide structure	Common Name	tris(4-methylphenyl)phosphine oxide
	CAS Number	797-70-6	Molecular Weight	320.36500
	Density	1.12g/cm3	Boiling Point	490ºC at 760 mmHg
	Molecular Formula	C₂₁H₂₁OP	Melting Point	145ºC
	MSDS	N/A	Flash Point	250.2ºC

Name	1-bis(4-methylphenyl)phosphoryl-4-methylbenzene
Synonym	More Synonyms

Density	1.12g/cm3
Boiling Point	490ºC at 760 mmHg
Melting Point	145ºC
Molecular Formula	C₂₁H₂₁OP
Molecular Weight	320.36500
Flash Point	250.2ºC
Exact Mass	320.13300
PSA	26.88000
LogP	4.25120
Index of Refraction	1.598

tris(4-methylphenyl)phosphine oxide MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: SZ2000000

CHEMICAL NAME :: Phosphine oxide, tris(p-tolyl)-

CAS REGISTRY NUMBER :: 797-70-6

BEILSTEIN REFERENCE NO. :: 2810669

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C21-H21-O-P

MOLECULAR WEIGHT :: 320.39

WISWESSER LINE NOTATION :: 1R DPO&R D1&R D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 56 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#02262

RTECS	SZ2000000
HS Code	2931900090

Precursor 9
CAS#:1038-95-5 Tri-p-tolylphosphine CAS#:6224-65-3 TRI(4-METHYLPHE... CAS#:106-38-7 4-Bromotoluene CAS#:124-64-1 Tetra(hydroxyme...
CAS#:7175-54-4 2-λ1-oxidanylox... CAS#:4294-57-9 P-TOLYLMAGNESIU... CAS#:73116-91-3 4,4,5,5-tetrame... CAS#:3400-27-9 2-methyl-3-p-ni...
CAS#:61249-20-5 methyl-tris(4-m...
DownStream 3
CAS#:1038-95-5 Tri-p-tolylphosphine CAS#:6840-28-4 diphenyl(p-toly... CAS#:791-28-6 Triphenylphosph...

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

tris-(4-methylphenyl)phosphine oxide

tri(4-methylphenyl)phosphine oxide

MFCD00059321

Phosphine oxide,tris(p-tolyl)

Tris(p-tolyl)phosphine oxide

tritolylphosphine oxide

Tri-p-tolylphosphine Oxide

tri(4-tolyl)phosphine oxide

tri(p-tolyl)phosphane oxide

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: tris(4-methylphenyl)phosphine oxide
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: TRI-P-TOLYLPHOSPHINE OXIDE
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

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tris(4-methylphenyl)phosphine oxide

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Chemical & Physical Properties

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Synthetic Route

Precursor & DownStream

Customs

Synonyms

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.