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Paraoxon methyl

HCID 13708
NotesReactions
Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
950-35-6
Standard SMILES
COP(=O)(OC)Oc1ccc([N+](=O)[O-])cc1
InChIKey
BAFQDKPJKOLXFZ-UHFFFAOYSA-N
Molecular formula
C8H10NO6P
Average molar mass
247.14 g/mol
Monoisotopic mass
247.02457404

Overview

Paraoxon-methyl is a C-nitro compound.

Names & identifiers

Preferred name
Paraoxon methyl
IUPAC
dimethyl (4-nitrophenyl) phosphate
English name
DIMETHYL-P-NITROPHENYLPHOSPHATE
Molecular formula
C8H10NO6P
Molecular weight
247.14

Names & synonyms

Methylparaoxon950-35-6Paraoxon methylDimethyl-p-nitrophenyl phosphateDTXSID5037571UE1A2XL95HPhosphoric acid, dimethyl-4-nitrophenyl esterDimethyl p-Nitrophenyl phosphateDTXCID3017571MEE 600RefChem:158283625-061-6
Show more names
dimethyl-4-nitrophenylphosphatebay11678Methyl-E 600methyl-e-600Paraoxon-Methydimethylparaoxon
Paraoxon-methylMETHYL PARAOXONDimethyl paraoxonDesmethylnitrophosDimethyl 4-nitrophenyl phosphatedimethyl (4-nitrophenyl) phosphateBAY 11678Phosphoric acid, dimethyl p-nitrophenyl ester

Database identifiers

CAS
950-35-6
PubChem CID
13708
DTXSID
DTXSID5037571
ChEMBL
CHEMBL26115
ChEBI
CHEBI:165199
UNII
UE1A2XL95H
EC Number
625-061-6
Nikkaji
J7.185D

Properties

Computed structural properties

XLogP
1.3
Topological polar surface area
90.6 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
6
Rotatable bonds
4
Heavy atoms
16
Formal charge
0
Complexity
275

Experimental & physicochemical properties

PesticidesPesticide degradation product
LogP1.33
Human DrugsPharmaceuticals

Physicochemical properties

Melting point
0 · 0-4 °C
Boiling point
164 °C · 164 °C(Press: 10 Torr)
Density
1.383 · 1.383±0.06 g/cm3(Predicted)
refractive index
20 · n20/D 1.523
Flash point
100 °C · 100 °C
storage temp.
2 · 2-8°C
solubility
Chloroform (Slightly), Methanol (Slightly)
color
Pale Yellow to Light Yellow
BRN
1884904 · 1884904
Henry's Law Constant
1.1 · 1.1×104 mol/(m3Pa) at 25℃, Woodrow et al. (1990)
Major Application
agricultureenvironmental
InChI
1S/C8H10NO6P/c1-13-16(12,14-2)15-8-5-3-7(4-6-8)9(10)11/h3-6H,1-2H3
InChIKey
BAFQDKPJKOLXFZ-UHFFFAOYSA-N
SMILES
COP(=O)(OC)Oc1ccc(cc1)[N+]([O-])=O
EWG's Food Scores
1 · 1
FDA UNII
1 A2XL95H · UE1A2XL95H
EPA Substance Registry System
Methyl paraoxon (950-35-6)
UNSPSC Code
41116107 · 41116107
NACRES
24 · NA.24
Symbol(GHS)
6 · GHS06,GHS08,GHS09
Signal word
Danger
Hazard statements
300 · H300+H310+H330-H372-H410
Precautionary statements
262 · P262-P264-P273-P280-P302+P352+P310-P304+P340+P310
target organs
Nervous system
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes
T+
Risk Statements
28 · 28
Safety Statements
28 · 28-36/37-45
RIDADR
3018 · 3018
WGK Germany
3 · 3
RTECS
5250000 · TC5250000
HazardClass
6.1 · 6.1(a)
PackingGroup
I
Storage Class
6.1 A · 6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
Hazard Classifications
1 DermalAcute · Acute Tox. 1 DermalAcute Tox. 1 InhalationAcute Tox. 1 OralAquatic Acute 1Aquatic Chronic 1STOT RE 1

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 5 items

This chemical does not meet GHS hazard criteria for 2.4% (1 of 42) of reports.

Danger

H300 (97.6%): Fatal if swallowed [Danger Acute toxicity, oral]

P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 42 reports by companies from 3 notifications to the ECHA C&L Inventory.

Hazard information

Hazard Classes and CategoriesAcute Tox. 1 (97.6%)

Safety & protection

Acute Exposure Guideline Levels (AEGLs)The compound is currently at the Holding Status AEGLs which have been reviewed by the NAC/AEGL Committee and are on hold due to insufficient data to develop AEGL values.
AEGLs NotesAEGLs Status: Holding

Toxicology

USGS Health-Based Screening Levels for Evaluating Water-Quality · 3 items

Paraoxon-methyl

Pesticide degradation product

Smith, C.D. and Nowell, L.H., 2024. Health-Based Screening Levels for evaluating water-quality data (3rd ed.). DOI:10.5066/F71C1TWP

Safety data

PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
3
rtecs
TC5250000
ridadr
3018
risk_code
28
Signal word
Danger
Symbol(GHS)
GHS06,GHS08,GHS09
hazard_code
T+
safety_code
28-36/37-45
hazard_class
6.1(a)
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
packing_group
I
target organs
Nervous system
Hazard statements
H300+H310+H330-H372-H410
Hazard Classifications
Acute Tox. 1 DermalAcute Tox. 1 InhalationAcute Tox. 1 OralAquatic Acute 1Aquatic Chronic 1STOT RE 1
Precautionary statements
P262-P264-P273-P280-P302+P352+P310-P304+P340+P310

Chemistry & industry

Uses & manufacturing

Use ClassificationPharmaceuticals

Applications

UsesMethylparaoxon is used in esterase detoxication of acetylcholinesterase inhibitor pesticides using human liver samples in vitro.

Upstream & downstream products

Upstream raw materials

Parathion-methyl4-NITROPHENYL PHOSPHORODICHLORIDATEMETHYL PHOSPHORODICHLORIDATEDIMETHYL PHOSPHOROCHLORIDATEMethanolDimethyl phosphite

Downstream products

4-Nitrophenol

Additional notes

DefinitionChEBI: Paraoxon-methyl is a C-nitro compound.

Related reactions

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New reaction record

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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes