Name | Trimethylphosphite |
Synonyms | P(OCH3)3 Trimethylphosphite TRIMETHYL PHOSPHITE trimethyl phosphite trimethoxyphosphine trimethyl phosphate TRIMETHYLPHOSPHIT S fosforyntrojmetylowy TRIMETHYL PHOSPHONATE Methyl phosphite ((MeO)3P) Trimethyl phosphite solution PHOSPHOROUS ACID TRIMETHYL ESTER |
CAS | 121-45-9 |
EINECS | 204-471-5 |
InChI | InChI=1/C3H9O4P/c1-5-8(4,6-2)7-3/h1-3H3 |
Molecular Formula | C3H9O3P |
Molar Mass | 124.08 |
Density | 1.052g/mLat 25°C(lit.) |
Melting Point | −78°C(lit.) |
Boling Point | 111-112°C(lit.) |
Flash Point | 82°F |
Water Solubility | Hydrolyzes with water. |
Vapor Presure | 17 mm Hg ( 20 °C) |
Vapor Density | 4.3 (vs air) |
Appearance | Liquid |
Specific Gravity | 1.052 |
Color | Colorless |
Exposure Limit | TLV-TWA 10 mg/m3 (2 ppm) (ACGIH). |
BRN | 956570 |
Storage Condition | 2-8°C |
Sensitive | 4: no reaction with water under neutral conditions |
Explosive Limit | 5.2-61.2%(V) |
Refractive Index | n20/D 1.408(lit.) |
Physical and Chemical Properties | Trimethyl phosphite is a colorless transparent liquid with pungent odor, M.P.<-75 °c, B. p.112 ℃,n20D 1.4076, relative density 1.054(20 ℃), soluble in methanol, ethanol, benzene and other organic solvents, water decomposition into dimethyl phosphite. |
Risk Codes | R10 - Flammable R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R41 - Risk of serious damage to eyes R37/38 - Irritating to respiratory system and skin. R65 - Harmful: May cause lung damage if swallowed R48/23/24/25 - R11 - Highly Flammable R46 - May cause heritable genetic damage R45 - May cause cancer R67 - Vapors may cause drowsiness and dizziness R66 - Repeated exposure may cause skin dryness or cracking R36 - Irritating to the eyes |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S16 - Keep away from sources of ignition. S53 - Avoid exposure - obtain special instructions before use. |
UN IDs | UN 2329 3/PG 3 |
WGK Germany | 1 |
RTECS | TH1400000 |
FLUKA BRAND F CODES | 10-13-21 |
TSCA | Yes |
HS Code | 2920 23 00 |
Hazard Class | 3 |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: 1600 mg/kg LD50 dermal Rabbit 2600 mg/kg |
Downstream Products | Monocrotophos Dichlorvos Triadimefon Glyphosate |
colorless transparent liquid, irritating odor. Flammable. The relative density was 1. 0520. Flow point < - 60 °c. Boiling point 112 °c. Flash point (Open Cup) 38 °c. Refractive index 4095. Viscosity (25 deg C) 0.58mPa.s. Insoluble in hot water, soluble in ethanol, ether, benzene, acetone, carbon tetrachloride and other organic solvents.
an important intermediate of organophosphorus pesticides, used in the production of dichlorvos, phosphorus Amine, monocrotophos, and other pesticides. It is also used as a flame retardant for plastics and wood, and as a synthetic polymerization catalyst and coating additive.