Section1= Chembox Identifiers
Section2= Chembox Properties
Appearance=White crystalline powder
Solubility=Insoluble (5 mg/L water)
Methanol, chloroform, diethyl ether
Section3= Chembox Hazards
Simazine is an
herbicideof the triazineclass. The compound is used to control broad-leaved weeds and annual grasses.
Water solubility: 5 mg/L @ 20 C
* Solubility in other solvents: s. in
methanol, chloroform, and diethyl ether ; s.s. in pentane
Vapor pressure: 0.000810 mPa @ 20 C
Partition coefficient: 1.9600
Adsorption coefficient: 130
Simazine may be prepared in the laboratory from
cyanuric chloridecrystals and a strong solution of ethyl amine(at least 50 percent by number in water). The reaction is highly exothermicand is therefore best carried out in an ice bath below 10 C. It is also essential to carry out the synthesis in a fume hoodsince cyanuric chloride decomposes at high temperatures into hydrogen chlorideand hydrogen cyanideboth of which are highly toxic by inhalation.
Properties and Uses
Simazine is an off-white crystalline compound which is sparingly soluble in water. It is a member of the triazine-derivative herbicides (see also
atrazine) and was widely used as a residual non-selective herbicide but is now banned in European Union states (EU directive 91/414/EEC). Like atrazine, it acts by inhibiting photosynthesis. It remains active in the soil for 2-7 months after application.
This is the first part of the mechanism. The produce the product simazine, add 4 equivalence of ethylamine instead of 2.
* Pesticide Action Network [http://pesticideinfo.org/Detail_Chemical.jsp?Rec_Id=PC34340]
* Extoxnet PIP [http://extoxnet.orst.edu/pips/simazine.htm]
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Look at other dictionaries:
Simazine — Général Nom IUPAC 2 chloro 4,6 diéthylamine 1,3,5 triazine No CAS … Wikipédia en Français
simazine — noun Etymology: sim (probably alteration of sym symmetrical, prefix used in names of organic compounds) + triazine Date: 1956 a selective herbicide C7H12N5Cl used to control weeds especially among crop plants … New Collegiate Dictionary
simazine — /suy meuh zeen /, n. Chem. a colorless crystalline selective herbicide, C7H12ClN5, used for season long weed control in corn and other crops. [1955 60; sim , resp. of SYM(METRICAL) + (TRI)AZINE] * * * … Universalium
simazine — noun The herbicide and algicide 6 chloro N2,N4 diethyl 1,3,5 triazine 2,4 diamine … Wiktionary
simazine — si·ma·zine (siґmə zēn) an herbicide used in gardens; it is toxic to ruminants, causing liver and kidney damage and neurotoxicity that can be fatal … Medical dictionary
simazine — [ sɪməzi:n, sʌɪ ] noun a synthetic herbicide derived from triazine. Origin 1950s: blend of symmetrical and triazine … English new terms dictionary
simazine — si·ma·zine … English syllables
simazine — /ˈsɪməzin/ (say simuhzeen) noun a herbicide used to control broad leaved weeds and annual grasses; derived from triazine … Australian English dictionary
simazine — noun a herbicide used to control weeds (especially among crops) • Hypernyms: ↑herbicide, ↑weedkiller, ↑weed killer … Useful english dictionary
122-34-9 — Simazine Simazine Général Nom IUPAC 2 chloro 4,6 diéthylamine 1,3,5 triazine No CAS … Wikipédia en Français