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Substance Name: Merphos
RN: 150-50-5
UNII: RN743HTX76
InChIKey: KLAPGAOQRZTCBI-UHFFFAOYSA-N

Classification Codes

  • Agricultural Chemical
  • Growth Regulator / Fertilizer
  • Herbicide
  • TSCA Flag P (a Commenced PMN (Premanufacture Notice) Substance)

Molecular Formula

  • C12-H27-P-S3

Molecular Weight

  • 298.517
 

Names and Synonyms

Name of Substance

  • Merphos

Synonyms

  • 4-01-00-01564 (Beilstein Handbook Reference)
  • AI3-25783
  • BRN 1703869
  • Butyl phosphorotrithioite
  • Butyl phosphorotrithioite ((BuS)3P)
  • Caswell No. 865
  • Chemagro B-1776
  • Deleaf defoliant
  • Easy off-D
  • EINECS 205-761-4
  • EPA Pesticide Chemical Code 074901
  • Folex
  • Folex 6EC
  • HSDB 1777
  • Merphos
  • NSC 27720
  • Phosphorotrithious acid, S,S,S-tributyl ester
  • Phosphorotrithious acid, tributyl ester
  • S,S,S-Tributyl phosphorotrithioite
  • S,S,S-Tributyl trithiophosphite
  • Tributyl phosphorotrithioite
  • Tributyl trithiophosphite
  • Tributylthiofosfin
  • Tributylthiofosfin [Czech]
  • UNII-RN743HTX76

Systematic Names

  • Phosphorotrithious acid, tributyl ester
  • S,S',S''-Tributyl phosphorotrithioite

Superlist Names

  • Merphos
  • Phosphorotrithious acid, tributyl ester
  • Tributyl phosphorotrithioite

Registry Numbers

CAS Registry Number

  • 150-50-5

FDA UNII

  • RN743HTX76

System Generated Number

  • 0000150505

Structure Descriptors

InChI

1S/C12H27PS3/c1-4-7-10-14-13(15-11-8-5-2)16-12-9-6-3/h4-12H2,1-3H3

InChIKey

KLAPGAOQRZTCBI-UHFFFAOYSA-N

Smiles

P(SCCCC)(SCCCC)SCCCC

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 850mg/kg (850mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 27(8), Pg. 97, 1962.
mouse LD50 intraperitoneal 1400mg/kg (1400mg/kg)   Biochemical Pharmacology. Vol. 12, Pg. 73, 1963.
mouse LD50 oral 635mg/kg (635mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 27(8), Pg. 97, 1962.
rabbit LD50 oral 170mg/kg (170mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 27(8), Pg. 97, 1962.
rabbit LD50 skin > 4600mg/kg (4600mg/kg)   Pesticide Manual. Vol. 8, Pg. 819, 1987.
rat LD50 intraperitoneal 70mg/kg (70mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1117, 1986.
rat LD50 oral 910mg/kg (910mg/kg)   Toxicology and Applied Pharmacology. Vol. 14, Pg. 515, 1969.
rat LD50 skin 615mg/kg (615mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 unreported 350mg/kg (350mg/kg)   "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 308, 1971.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 100 deg C   EXP
log P (octanol-water) 7.670 (none)   EST
Water Solubility 3.50E-03 mg/L 25 EST
Vapor Pressure 2.00E-05 mm Hg 25 EST
Henry's Law Constant 2.27E-05 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 7.88E-11 cm3/molecule-sec 25 EST

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