Trimethyl phosphite |
Synonyms & Trade Names Methyl phosphite, Trimethoxyphosphine, Trimethyl ester of phosphorous acid |
CAS No. 121-45-9 |
RTECS No. TH1400000 |
DOT ID & Guide 2329 130 |
Formula(CH3O)3P |
Conversion 1 ppm = 5.08 mg/m3 |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: TWA 2 ppm (10 mg/m3)
OSHA PEL†: none |
Measurement Methods
None available
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a distinctive, pungent odor. |
MW: 124.1 |
BP: 232°F |
FRZ: -108°F |
Sol: Reacts |
VP(77°F): 24 mmHg |
IP: ? |
Sp.Gr: 1.05 |
Fl.P: 82°F |
UEL: ? |
LEL: ? |
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| Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F. |
Incompatibilities & Reactivities Magnesium perchlorate, water [Note: Reacts (hydrolyzes) with water.] |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, upper respiratory system; dermatitis; in animals: teratogenic effects |
Target Organs Eyes, skin, respiratory system, reproductive system |
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Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
Provide: Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 1556
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