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Substance Name: Dimethyl hydrogen phosphite
RN: 868-85-9
UNII: ST4TBO000H
InChIKey: HZCDANOFLILNSA-UHFFFAOYSA-N

Note

  • Intermediate in production of insecticides or herbicides.

Molecular Formula

  • C2-H7-O3-P

Molecular Weight

  • 110.0483
 

Classification Codes

Classification Codes

  • Mutation Data
  • Skin / Eye Irritant
  • Tumor Data

Superlist Classification Code

  • Overall Carcinogenic Evaluation: Group 3
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Names and Synonyms

Name of Substance

  • Dimethyl hydrogen phosphite

Synonyms

  • Bis(hydroxymethyl)phosphine oxide
  • CCRIS 1354
  • Dimethoxyphosphine oxide
  • Dimethyl acid phosphite
  • Dimethyl hydrogen phosphite
  • Dimethyl hydrogen phosphonate
  • Dimethyl phosphite
  • Dimethyl phosphonate
  • Dimethylester kyselini fosforite
  • Dimethylester kyselini fosforite [Czech]
  • Dimethylester kyseliny fosforite
  • Dimethylester kyseliny fosforite [Czech]
  • Dimethylfosfit
  • Dimethylfosfit [Czech]
  • Dimethylfosfonat
  • Dimethylfosfonat [Czech]
  • Dimethylhydrogenphosphite
  • EC 212-783-8
  • EINECS 212-783-8
  • HSDB 2593
  • Hydrogen dimethyl phosphite
  • Methyl phosphonate ((MeO)2HPO)
  • NCI-C54773
  • Phosphonic acid, dimethyl ester
  • UNII-ST4TBO000H

Systematic Names

  • Dimethyl hydrogen phosphite
  • Dimethyl phosphonate
  • Phosphonic acid, dimethyl ester

Superlist Names

  • Dimethyl hydrogen phosphite
  • Phosphonic acid, dimethyl ester

Registry Numbers

CAS Registry Number

  • 868-85-9

FDA UNII

  • ST4TBO000H

System Generated Number

  • 0000868859

Structure Descriptors

InChI

1S/C2H7O3P/c1-4-6(3)5-2/h6H,1-2H3

InChIKey

HZCDANOFLILNSA-UHFFFAOYSA-N

Smiles

COP(=O)OC

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LC inhalation > 7100mg/m3/6H (7100mg/m3) LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

BLOOD: HEMORRHAGE
National Technical Information Service. Vol. OTS0537047,
guinea pig LD50 oral 900mg/kg (900mg/kg) GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION

AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC
Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 36(4), Pg. 22, 1992.
mouse LC inhalation > 7100mg/m3/6H (7100mg/m3) LUNGS, THORAX, OR RESPIRATION: DYSPNEA

SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE
National Technical Information Service. Vol. OTS0537047,
mouse LD50 oral 1831mg/kg (1831mg/kg) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION

AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 36(4), Pg. 22, 1992.
mouse LD50 subcutaneous 2610mg/kg (2610mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 36(4), Pg. 22, 1992.
rabbit LD50 skin 681mg/kg (681mg/kg) BEHAVIORAL: ATAXIA

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
National Technical Information Service. Vol. OTS0537044,
rat LC50 inhalation > 20gm/m3 (20000mg/m3)   Albright & Wilson Inc. Vol. #OPB-3, Pg. 1984,
rat LD50 oral 3040mg/kg (3040mg/kg)   National Toxicology Program Technical Report Series. Vol. NTP-TR-287, Pg. 1985,
rat LD50 subcutaneous 2970mg/kg (2970mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 36(4), Pg. 22, 1992.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Boiling Point 170.5 deg C   EXP
log P (octanol-water) -1.130 (none)   EST
Water Solubility 1.00E+06 mg/L 25 EST
Vapor Pressure 4.52 mm Hg 25 EXP
Henry's Law Constant 3.28E-06 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 5.58E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.