methoxychlor

Description

methoxychlor · CAS 72-43-5 · C16H15Cl3O2. UNII RIA79UD69L. Melting Point: 187 to 190 °F (NTP, 1992); Melting Point: 87 °C; Melting Point: MP: 172 °F (77.78 °C).

Identification

CAS Registry Number	72-43-5
PubChem CID	4115
Molecular formula	C16H15Cl3O2
IUPAC name	1-methoxy-4-[2,2,2-trichloro-1-(4-methoxyphenyl)ethyl]benzene
UNII (FDA)	RIA79UD69L

Computed Descriptors

Molecular Weight	345.6
XLogP3	5.1
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	4
Exact Mass	344.013763
Monoisotopic Mass	344.013763
Topological Polar Surface Area	18.5
Heavy Atom Count	21
Formal Charge	0

Physical & Chemical Properties

Melting Point	187 to 190 °F (NTP, 1992)
Melting Point	87 °C
Melting Point	MP: 172 °F (77.78 °C)
Melting Point	MP: 89 °C (technical, 77 °C)
Melting Point	89 °C
Melting Point	171 °F
Solubility	0.00001%
Density	1.41 g/cu cm at 25 °C
Density	1.4 g/cm³
Density	1.41

Physical description & handling notes

• Colorless to light-yellow crystals with a slight, fruity odor. [insecticide]; [NIOSH]
• COLOURLESS-TO-LIGHT-YELLOW CRYSTALS WITH CHARACTERISTIC ODOUR.
• Colorless to light-yellow crystals with a slight, fruity odor.
• Colorless crystals (technical, grey powder)
• Dimorphic crystals
• Crystals from dilute alcohol

Regulatory Status

GHS notification summary	5.4% (3 / 56)

GHS Hazard Classification

GHS notification summary	5.4% (3 / 56)
Reported hazard statements	H302, H312, H332 (30.4%), H361 (30.4%), H371 (62.5%), H373 (30.4%), H400 (94.6%), H410 (33.9%)

Documented Uses

• Used to kill insects on fruits, vegetables, and forest crops; used to kill parasites on cattle; [EXTOXNET]
• Theraputic Category (Vet): Ectoparasiticide
• Widely used because of long residual action against many species of insects and low toxicity to humans and warm-blooded animals. For certain insect pests on fruit and shade trees, vegetables, cattle, and around farm buildings (except poultry houses). Replacement for DDT where application may constitute a hazard to warm-blooded animals or plants. Rarely phytotoxic, and injury is usually negligible even on DDT-susceptible crops such as cucurbits.
• For more Uses (Complete) data for METHOXYCHLOR (10 total), please visit the HSDB record page.
• Methoxychlor is used as an insecticide against flies, mosquitoes, cockroaches, chiggers, and a wide variety of other insects. It is used on agricultural crops and livestock, and in animal feed, barns, grain storage bins, home garden, and on pets. (L167)
• Information on 5 consumer products that contain Methoxychlor in the following categories is provided:

Synonyms

methoxychlor; 72-43-5; p,p'-Methoxychlor; DMDT; Dimethoxy-DDT; Methoxy-DDT; Methoxcide; Marlate; Metox; Moxie; Maralate; Higalmetox; Metoksychlor; Dianisyl trichloroethane; Dianisyltrichlorethane; Dimethoxy-DT

Frequently Asked Questions

What are the CAS number and molecular formula of methoxychlor?

CAS 72-43-5; molecular formula C16H15Cl3O2; molecular weight — g/mol.

What other names is methoxychlor known by?

methoxychlor, 72-43-5, p,p'-Methoxychlor, DMDT, Dimethoxy-DDT, Methoxy-DDT.

Is methoxychlor classified as hazardous?

5.4% of GHS notifications report no hazard classification (3 of 56).

What are the key physical properties of methoxychlor?

Melting Point: 187 to 190 °F (NTP, 1992); Melting Point: 87 °C; Melting Point: MP: 172 °F (77.78 °C); Melting Point: MP: 89 °C (technical, 77 °C).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.