8.00553

Trimethyl phosphite

for synthesis

• Synonym(s): Trimethyl phosphite
• Empirical Formula (Hill Notation): C₃H₉O₃P
• CAS Number: 121-45-9
• Molecular Weight: 124.08
• MDL number: MFCD00008350
• UNSPSC Code: 12352108
• EC Index Number: 204-471-5
• NACRES: NA.22

Properties

• vapor pressure: 28 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥98.0% (GC)
• form: liquid
• autoignition temp.: 250 °C
• potency: 1600 mg/kg LD₅₀, oral (Rat); 2600 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 5.2-61.2 % (v/v)
• bp: 112 °C/1013 hPa
• mp: -78 °C
• transition temp: flash point 28 °C
• density: 1.05 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3
• InChI key: CYTQBVOFDCPGCX-UHFFFAOYSA-N

Description

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.051 - 1.053
Identity (IR): passes test

Safety Information

• pictograms: GHS02,GHS07
• signalword: Warning
• hcodes: H226 - H302 - H315 - H319 - H335
• pcodes: P210 - P233 - P240 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• supp_hazards: EUH014
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 82.4 °F - closed cup
• flash_point_c: 28 °C - closed cup