Trimethyl phosphite
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Trimethyl phosphite Properties
- Melting point:
- −78 °C(lit.)
- Boiling point:
- 111-112 °C(lit.)
- Density
- 1.052 g/mL at 25 °C(lit.)
- vapor density
- 4.3 (vs air)
- vapor pressure
- 17 mm Hg ( 20 °C)
- refractive index
- n
20/D 1.408(lit.)
- Flash point:
- 82 °F
- storage temp.
- 2-8°C
- form
- Liquid
- color
- Colorless
- Specific Gravity
- 1.052
- explosive limit
- 5.2-61.2%(V)
- Water Solubility
- Hydrolyzes with water.
- Sensitive
- Air & Moisture Sensitive
- BRN
- 956570
- Exposure limits
- TLV-TWA 10 mg/m3 (2 ppm) (ACGIH).
- CAS DataBase Reference
- 121-45-9(CAS DataBase Reference)
- NIST Chemistry Reference
- Phosphorous acid, trimethyl ester(121-45-9)
- EPA Substance Registry System
- Trimethyl phosphite (121-45-9)
SAFETY
- Risk and Safety Statements
| Symbol(GHS) |     GHS02,GHS05,GHS07,GHS08 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||||
| Hazard statements | H226-H302-H315-H317-H318-H335-H341-H351-H313-H319-H361 | |||||||||||
| Precautionary statements | P201-P303+P361+P353-P405-P501a-P210-P280-P301+P312+P330-P305+P351+P338+P310-P370+P378-P261-P305+P351+P338 | |||||||||||
| Hazard Codes | Xn,T,F,Xi | |||||||||||
| Risk Statements | 10-22-36/37/38-41-37/38-65-48/23/24/25-11-46-45-67-66-36 | |||||||||||
| Safety Statements | 26-39-62-45-16-53 | |||||||||||
| RIDADR | UN 2329 3/PG 3 |
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| WGK Germany | 1 |
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| RTECS | TH1400000 |
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| F | 10-13-21 | |||||||||||
| Autoignition Temperature | 250 °C | |||||||||||
| TSCA | Yes | |||||||||||
| HSCode | 2920 23 00 | |||||||||||
| HazardClass | 3 | |||||||||||
| PackingGroup | III | |||||||||||
| Toxicity | LD50 orally in Rabbit: 1600 mg/kg LD50 dermal Rabbit 2600 mg/kg | |||||||||||
| NFPA 704 |
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Trimethyl phosphite price More Price(18)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 240907 | Trimethyl phosphite ≥99% | 121-45-9 | 25g | $33.1 | 2019-12-02 | Buy |
| Sigma-Aldrich | 240907 | Trimethyl phosphite ≥99% | 121-45-9 | 100g | $90.7 | 2019-12-02 | Buy |
| Alfa Aesar | 030132 | Trimethyl phosphite 97% | 121-45-9 | 500g | $128 | 2019-12-02 | Buy |
| Alfa Aesar | 030132 | Trimethyl phosphite, 97% | 121-45-9 | 100g | $34 | 2019-12-02 | Buy |
| Strem Chemicals | 15-6550 | Trimethylphosphite, 97% | 121-45-9 | 1kg | $156 | 2019-12-02 | Buy |
Trimethyl phosphite Chemical Properties,Uses,Production
Chemical Properties
Trimethyl phosphite is a colorless liquid. Distinctive pungent, pyridine-like odor. The Odor Threshold is 0.0001 ppm.Uses
Chemical intermediate, especially for insecticides.Uses
Trimethyl phosphite is used in the manufacture of pesticides and fire retardants..Production Methods
Produced via a reaction between phosphorus trichloride and methanol in the presence of a tertiary amine catalyst such as diethylaniline.General Description
A clear colorless liquid with a strong foul odor. Flash point 99°F. Denser than water and insoluble in waterwater; soluble in hexane, benzene, acetone, alcohol, ether, carbon tetrachloride, and kerosene.. Vapors heavier than air. Used to make other chemicals.Air & Water Reactions
Highly flammable. Insoluble in water and denser than water. Slowly reacts with water to form phosphoric acid and corresponding organic alcohol.Reactivity Profile
As soon as Trimethyl phosphite contacted a small amount of magnesium perchlorate in a flask, there was a flash and an explosion that shattered the flask (Allison 1968).Health Hazard
Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.Health Hazard
Trimethyl phosphite is a skin, eye, and mucous membrane irritant with low subacute inhalation toxicity. Its irritating action on rabbits’ skin was moderate to severe. The pure liquid instilled into the eyes can cause severe irritation and swelling, which can last for a few days. Chronic exposure to 300–600 ppm concentration in air produced lung inflammation and cataracts in mice. There was no acute inhalation toxicity observed in test animals. The oral and dermal toxicities were low.LD50 value, oral (rats): 1600 mg/kg
Teratogenic effects showing gross abnormalities were observed in newborn rats when pregnant rats were dosed with high concentrations of trimethyl phosphite.
The odor threshold for this compound was determined to be 0.0001 ppm (ACGIH 1986). The odor is irritating and pungent at high concentrations..
Fire Hazard
Special Hazards of Combustion Products: Toxic fumes of PO xSafety Profile
Moderately toxic by ingestion and skin contact. An experimental teratogen. A severe skin and eye irritant. Flammable liquid when exposed to heat, flame, or oxidizers. To fight fire, use water, foam, fog, CO2. Violent explosive reaction on contact with magnesium perchlorate or trimethyl platinum(IV) azide tetramer. When heated to decomposition it emits toxic fumes of POx. An intermediate in the production of pesticides, fire retardants, and organic phosphorus additives. See also ESTERS.Potential Exposure
Trimethyl phosphite is a flame retardant, and used as an intermediate in the manufacture of a number of pesticides, and organophosphorus additives.Shipping
UN2329 Trimethyl phosphite, Hazard Class: 3; Labels: 3-Flammable liquid.Purification Methods
Treat the phosphite with Na (to remove water and any dialkyl phosphonate), then decant and distil it with protection against moisture. It has also been treated with sodium wire for 24hours, then distilled in an inert atmosphere onto activated molecular sieves [Connor et al. J Chem Soc, Dalton Trans 511 1986]. It can be fractionally distilled using a spinning band column at high reflux ratio. It is a colourless liquid which is slowly hydrolysed by H2O. [Gillis et al. J Am Chem Soc 80 2999 1958, NMR: Callis et al. J Am Chem Soc 79 2719 1957, Kosolapoff Organophosphorus Compounds, Wiley p 203 1950, Beilstein 1 IV 1256.]Incompatibilities
Vaor May form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Violent reaction with magnesium perchlorate. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Reacts (hydrolyzes) with water. Incompatible with air, moisture.Waste Disposal
Trimethyl phosphite may be burned in a chemical incinerator equipped with an afterburner and scrubber.Trimethyl phosphite Preparation Products And Raw materials
Raw materials
Organic base
Triphenyl phosphite
Sodium methanolate
N,N-Dimethylaniline
1,2-Dichlorobenzene
AMMONIUM CARBAMATE
Preparation Products
Tetrachlorvinphos
Phosphite
Flame retardant for pure-dacron
MEVINPHOS
6-Bromoisoquinoline
HEPTENOPHOS
Dichlorvos
1,4-BIS(2-METHYLSTYRYL)BENZENE
Isoquinoline, 6-(bromomethyl)- (9CI)
(Aminomethyl)phosphonic acid
6-Methylisoquinoline
Capsaicin
Dimethyl acetylmethylphosphonate
Flame retardant for fabric
Triadimefon
PHOSPHAMIDON
Glyphosate
fluorescent whitening agent ATS-X
Monocrotophos
8-METHYL-ISOQUINOLINE
Trimethyl phosphite Suppliers
Global( 149)Suppliers
| Supplier | Tel | Fax | Country | ProdList | Advantage | |
|---|---|---|---|---|---|---|
| Mainchem Co., Ltd. | +86-0592-6210733 |
+86-0592-6210733 | sale@mainchem.com | CHINA | 32447 | 55 |
| career henan chemical co | +86-371-86658258 |
sales@coreychem.com | CHINA | 29996 | 58 | |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 |
+86 0531-67809011 | sales@sdzschem.com | CHINA | 2995 | 58 |
| Chemwill Asia Co.,Ltd. | 86-21-51086038 |
86-21-51861608 | chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com | CHINA | 23981 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 86-18871470254 |
027-59599243 | sales@jushengtech.com | CHINA | 28236 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 |
027-59338440 | sales@guangaobio.com | CHINA | 23049 | 58 |
| Chongqing Chemdad Co., Ltd | +86-13650506873 |
sales@chemdad.com | CHINA | 35440 | 58 | |
| Henan tianfu chemical co. LTD | 0371-55170695 |
info@hnbon.com | CHINA | 20538 | 58 | |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing) |
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) | sh@meryer.com | China | 40269 | 62 |
| Alfa Aesar | 400-610-6006 |
021-67582001/03/05 | saleschina@alfa-asia.com | China | 30163 | 84 |
View Lastest Price from Trimethyl phosphite manufacturers
| Image | Release date | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-07-02 |
Trimethyl phosphite 121-45-9 |
US $1.00 / KG | 1KG | 99 | 25kg | career henan chemical co |
121-45-9(Trimethyl phosphite)Related Search:
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