氰磷

Description

cyanophos · CAS 2636-26-2 · C9H10NO3PS. UNII 2AB0Z99OXP. Boiling Point: 119-120 °C (decomp) at 0.09 mm Hg; Melting Point: 57 to 59 °F (EPA, 1998); Melting Point: 14-15 °C.

Identification

CAS Registry Number	2636-26-2
PubChem CID	17522
Molecular formula	C9H10NO3PS
IUPAC name	4-dimethoxyphosphinothioyloxybenzonitrile
UNII (FDA)	2AB0Z99OXP

Computed Descriptors

Molecular Weight	243.22
XLogP3	2.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	243.01190135
Monoisotopic Mass	243.01190135
Topological Polar Surface Area	83.6
Heavy Atom Count	15
Formal Charge	0

Physical & Chemical Properties

Boiling Point	119-120 °C (decomp) at 0.09 mm Hg
Melting Point	57 to 59 °F (EPA, 1998)
Melting Point	14-15 °C
Flash Point	104 °C
Density	1.255 to 1.265 at 77 °F H2O = 1 (EPA, 1998)
Density	1.255-1.265 at 25 °C
Density	1.255-1.265 @25 °C
Vapor Pressure	0.0008 mmHg at 68 °F (EPA, 1998)
Vapor Pressure	0.000788 [mmHg]
Vapor Pressure	105 mPa at 20 °C

Physical description & handling notes

• Cyanophos is a yellow to reddish-yellow transparent liquid. Used as an insecticide against rice stem borers and house flies. Not registered as a pesticide in the U.S. (EPA, 1998)
• Yellow to reddish-yellow transparent liquid; Rapidly decomposed by light and alkalinity; mp = 14-15 deg C; [Merck Index] Colorless liquid; [MSDSonline]
• Yellow to reddish-yellow transparent liquid
• Clear amber liquid
• Faint characteristic odor
• 246 to 248 °F at 0.09 mmHg Decomposes (EPA, 1998)

GHS Hazard Classification

Reported hazard statements	H302, H312, H400, H410, H311, H370, H372, H361

Documented Uses

• Used as insecticide for fruits, vegetables, and cotton; Also used to control public health pests (i.e. cockroaches and mosquitoes) and to protect grain; [HSDB]
• For fruits, vegetables; controls lepidopterous larvae on apples, vegetables; grain protectant.
• Insecticide used at 25-50 g a.i./hectoliter to control Aphididae, Coccidae, Diaspididae, Lepidoptera, and Margarodidae in cotton, fruit, and vegetables. Used to control locusts and sanitary pests such as Blattidea, Culicidae and Muscidae.
• Most organophosphate compounds are ... absorbed from skin, conjunctiva, gastrointestinal tract, & lung. /Organophosphate compounds/
• Many of the organophosphorus insecticides are excreted in the milk ... /Organophosphorus insecticides/
• Following their absorption, most organophosphorus cmpd are excreted almost entirely as hydrolysis products in the urine. /Anticholinesterase agents/

Synonyms

CYANOPHOS; 2636-26-2; Ciafos; Cyanox; CYAP; Cynock; Sumitomo S 4084; Bayer 34727; BAY 34727; O-(4-Cyanophenyl) O,O-dimethyl phosphorothioate; O,O-Dimethyl-O-p-cyanophenyl phosphorothioate; O-p-Cyanophenyl O,O-dimethyl phosphorothioate; OMS 226; OMS 869; O,O-Dimethyl O-(4-cyanophenyl) thionophosphate; 4-(Dimethoxyphosphinothioyloxy)benzonitrile

Frequently Asked Questions

What are the CAS number and molecular formula of cyanophos?

CAS 2636-26-2; molecular formula C9H10NO3PS; molecular weight — g/mol.

What other names is cyanophos known by?

CYANOPHOS, 2636-26-2, Ciafos, Cyanox, CYAP, Cynock.

Is cyanophos classified as hazardous?

Hazard statements reported: H302, H312, H400, H410, H311.

What are the key physical properties of cyanophos?

Boiling Point: 119-120 °C (decomp) at 0.09 mm Hg; Melting Point: 57 to 59 °F (EPA, 1998); Melting Point: 14-15 °C; Flash Point: 104 °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.