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ETHYLDICHLOROPHOSPHINE is a colorless to light yellow liquid with a pungent odor. It is denser than water and is classified as very toxic by inhalation.

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  • 1498-40-4 Structure
  • Basic information

    1. Product Name: ETHYLDICHLOROPHOSPHINE
    2. Synonyms: C2H5PCl2;Dichlor-ethylfosfin;dichloroethyl-phosphin;ethyl-phosphonousdichlorid;ethylphosphonousdichloride,anhydrous;Phosphine, dichloroethyl-;Phosphonous dichloride, ethyl-;TL 373
    3. CAS NO:1498-40-4
    4. Molecular Formula: C2H5Cl2P
    5. Molecular Weight: 130.94
    6. EINECS: 216-096-4
    7. Product Categories: Chlorophosphines;Ligand;organophosphine halide
    8. Mol File: 1498-40-4.mol
    9. Article Data: 7
  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 112 °C(lit.)
    3. Flash Point: 91 °F
    4. Appearance: colorless/liquid
    5. Density: 1.26 g/mL at 25 °C(lit.)
    6. Vapor Pressure: 26.1mmHg at 25°C
    7. Refractive Index: n20/D 1.495(lit.)
    8. Storage Temp.: Flammables area
    9. Solubility: N/A
    10. Sensitive: air sensitive, moisture sensitiv
    11. CAS DataBase Reference: ETHYLDICHLOROPHOSPHINE(CAS DataBase Reference)
    12. NIST Chemistry Reference: ETHYLDICHLOROPHOSPHINE(1498-40-4)
    13. EPA Substance Registry System: ETHYLDICHLOROPHOSPHINE(1498-40-4)
  • Safety Data

    1. Hazard Codes: F,C
    2. Statements: 14-17-34
    3. Safety Statements: 6-26-36/37/39-43-45
    4. RIDADR: UN 2845 4.2/PG 1
    5. WGK Germany: 3
    6. RTECS: TB2465000
    7. HazardClass: 4.2
    8. PackingGroup: I
    9. Hazardous Substances Data: 1498-40-4(Hazardous Substances Data)

1498-40-4 Usage

Uses

Used in Chemical Synthesis:
ETHYLDICHLOROPHOSPHINE is used as a reagent for the production of various chemical compounds due to its reactive nature and ability to form phosphorus-carbon bonds.
Used in Pesticide Industry:
ETHYLDICHLOROPHOSPHINE is used as a precursor in the synthesis of certain pesticides, specifically organophosphate pesticides, which are effective in controlling pests in agriculture.
Used in Pharmaceutical Industry:
ETHYLDICHLOROPHOSPHINE is used as an intermediate in the production of some pharmaceuticals, particularly those containing phosphorus in their molecular structure.
Used in Flame Retardants:
ETHYLDICHLOROPHOSPHINE is used as a component in the formulation of flame retardants, which are essential in the manufacturing of materials with fire-resistant properties.

Synthesis Reference(s)

Canadian Journal of Chemistry, 41, p. 2299, 1963 DOI: 10.1139/v63-333The Journal of Organic Chemistry, 14, p. 429, 1949 DOI: 10.1021/jo01155a014

Air & Water Reactions

Highly flammable. Pyrophoric, will spontaneously ignite on contact with water or moisture in air. In water the compound also decomposes to form hydrochloric acid, [AAR 1991].

Reactivity Profile

ETHYL PHOSPHONOUS DICHLORIDE is an acid halide and organophosphate. Flammable/combustible material. May ignite on contact with air or moist air. May burn rapidly with flare-burning effect. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].

Health Hazard

Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.

Fire Hazard

Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.

Safety Profile

Moderately toxic by inhalation. Corrosive. A severe irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits very toxic fumes of POx, Cl-, and phosphine. See also PHOSPHINE.

Check Digit Verification of cas no

The CAS Registry Mumber 1498-40-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,9 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1498-40:
(6*1)+(5*4)+(4*9)+(3*8)+(2*4)+(1*0)=94
94 % 10 = 4
So 1498-40-4 is a valid CAS Registry Number.
InChI:InChI=1/C2H5Cl2P/c1-2-5(3)4/h2H2,1H3

1498-40-4Relevant articles and documents

Method for preparing dichloro monoalkyl phosphine

-

Paragraph 0065-0066, (2017/08/29)

The invention discloses a method for preparing dichloro monoalkyl phosphine. When sodium chloride is used for decomplexing reaction of a binary complex of dichloro monoalkyl aluminum or alkyl aluminum sesquichloride and phosphorus trichloride, alkane solvents are added, the dissociated dichloro monoalkyl phosphine enters the alkane solvents, alkane solution of the dichloro monoalkyl phosphine and newly-generated NaAlCl4 solids are filtered and separated, mixture of the product dichloro monoalkyl phosphine and the alkane solvents can be distilled and separated and can also directly enter a next application process without separation, decomposition of traditional dichloro monoalkyl phosphine in high-temperature distillation is avoided, yield is improved, and waste residues are reduced.

Microsynthesis and electron ionization mass spectral studies of O(S)-alkyl N,N-dimethyl alkylphosphono(thiolo)thionoamidates for Chemical Weapons Convention verification

Saeidian, Hamdollah,Babri, Mehran,Abdoli, Morteza,Sarabadani, Mansour,Ashrafi, Davood,Naseri, Mohammad Taghi

, p. 2805 - 2814 (2013/01/15)

RATIONALE The availability of mass spectra and interpretation skills are essential for unambiguous identification of the Chemical Weapons Convention (CWC)-related chemicals. The O(S)-alkyl N,N-dimethyl alkylphosphono(thiolo) thionoamidates are included in the list of scheduled CWC-related compounds, but there are very few spectra from these compounds in the literature. This paper examines these spectra and their mass spectral fragmentation routes. METHODS The title chemicals were prepared through microsynthetic protocols and were analyzed using electron ionization mass spectrometry with gas chromatography as a MS-inlet system. Structures of fragments were confirmed using analysis of fragment ions of deuterated analogs, tandem mass spectrometry and density functional theory (DFT) calculations. RESULTS Mass spectrometric studies revealed some interesting fragmentation pathways during the ionization process, such as alkene and amine elimination and McLafferty-type rearrangements. The most important fragmentation route of the chemicals is the thiono-thiolo rearrangement. DFT calculations are used to support MS results and to reveal relative preference formation of fragment ions. The retention indices (RIs) of all the studied compounds are also reported. CONCLUSIONS Mass spectra of the synthesized compounds were investigated with the aim to enrich the Organization for the Prohibition of Chemical Weapons (OPCW) Central Analytical Database (OCAD) which may be used for detection and identification of CWC-related chemicals during on-site inspection and/or off-site analysis such as OPCW proficiency tests. Copyright

ANHYDROUS DERIVATIVES OF ACIDS OF TRIVALENT PHOSPHORUS CONTAINING A CYANO GROUP

Pudovik, A. N.,Nazmutdinova, V. N.,Chirkova, L. P.

, p. 551 - 554 (2007/10/02)

Chloro- and O-acetyl cyanides of trivalent phosphorus disproportionate into the corresponding dicyanides and dichlorides or diacyl derivatives of P(III), while S-acetyl cyanothiophosphites and -phosphonites are thermally stable.Alcoholysis of S-acetyl cyanothiophosphite at room temperature is accompanied by the formation of O.O-diethyl S-acetyl thiophosphite.At low temperature, this reaction gives diethyl cyanophosphite.

Preparation and -Cycloaddition of Methylthio-chlorophosphanes RP(Cl)SMe (R = Me, Et, Ph)

Apitz, Joerg,Grobe, Joseph,Le Van, Duc

, p. 257 - 260 (2007/10/02)

The methylthio-chlorophosphanes RP(Cl)SMe are prepared in good yields (62-65percent) by condensation reactions of the corresponding dichlorophosphanes RPCl2 with methanethiol in the presence of trimethylamine (molar ratio 1:1:1). 1 and 3 have been used to produce 3-phospholene sulfides in a one-pot process by reaction with 1,3-dienes at 70 to 100 deg C.Reaction proceeds via -cycloadducts, which in suitable cases can be isolated and used for the preparation of the corresponding 3-phospholene oxides.New compounds were characterized by elemental analysis and spectroscopic investigations (NMR, MS). - Keywords: Methylthio-chlorophosphanes, 3-Phospholene Sulfides and Oxides, Mass Spectra, NMR Spectra

Process for the preparation of phenyl- and thienyl-chlorophosphane derivatives

-

, (2008/06/13)

Organic chlorophosphanes of the formula II STR1 in which R1 =an aromatic or heterocyclic radical and R2 =an aliphatic radical or Cl are prepared by reacting organic phosphorus oxychlorides of the formula I STR2 in which R1 and R2 have the meaning mentioned above with triphenylphosphane (C6 H5)3 P at an elevated temperature. The organic chlorophosphanes II are, in the main, intermediates in various specialized fields, such as the pharmaceuticals, plant protection, dyestuffs and polymers sectors.

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