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1,4-Difluorobenzene

HCID 10892
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
540-36-3
Standard SMILES
Fc1ccc(F)cc1
InChIKey
QUGUFLJIAFISSW-UHFFFAOYSA-N
Molecular formula
C6H4F2
Average molar mass
114.09 g/mol
Monoisotopic mass
114.02810657

Overview

1,4-difluorobenzene is a difluorobenzene.

Names & identifiers

Preferred name
1,4-Difluorobenzene
IUPAC
1,4-difluorobenzene
English name
1,4-Difluorobenzene
Molecular formula
C6H4F2
Molecular weight
114.09

Names & synonyms

1,4-DIFLUOROBENZENEp-Difluorobenzene2,5-difluorobenzene1,4-DifluorbenzolUNII-Y9FQ2EF0Z6EINECS 208-742-9Y9FQ2EF0Z6NSC 10286NSC-10286P-DIFLUOROBENZENE [MI]DTXSID1075432CHEBI:38585
Show more names
48944p-DFB1,4-DifL1.4-DifluorobeFor fluorobenzenep-difluoro-benzen4-Difluorobenzene1,4-Fluorobenzene
QUGUFLJIAFISSW-UHFFFAOYSA-pDifluorobenzeneparaDifluorobenzeneBenzene, pdifluoroBenzene, 1,4difluoroRefChem:73253Benzene, 1,4difluoro (9CI)DTXCID0041563

Database identifiers

CAS
540-36-3
PubChem CID
10892
DTXSID
DTXSID1075432
ChEMBL
CHEMBL496192
ChEBI
CHEBI:38585
UNII
Y9FQ2EF0Z6
EC Number
208-742-9
Nikkaji
J43.474D

Properties

Computed structural propertiesFilling in

XLogP
2.2
Topological polar surface area
0 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
2
Rotatable bonds
0
Heavy atoms
8
Formal charge
0
Complexity
54.9

Experimental & physicochemical properties

Chemical ClassesOther Classes -> Halogenated Monoaromatics
SpringerMaterials Properties13C nuclear magnetic resonance spectrum
LogP2.26
Physical DescriptionLiquid with a pungent aromatic odor; [Merck Index] Colorless liquid; [MSDSonline]

Physicochemical properties

Melting point
-13 °C · -13 °C (lit.)
Boiling point
88 · 88-89 °C (lit.)
Density
1.11 g/mL · 1.11 g/mL at 25 °C (lit.)
refractive index
20 · n20/D 1.441(lit.)
Flash point
36 °F · 36 °F
storage temp.
room temp
solubility
1.2 g/l · 1.2g/l
form
Liquid

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 1.9% (1 of 53) of reports.

Danger

H224 (69.8%): Extremely flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P264+P265, P280, P303+P361+P353, P305+P351+P338, P337+P317, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 53 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Hazards SummaryAn irritant; [MSDSonline] See p-Dichlorobenzene.
Hazard Classes and CategoriesFlam. Liq. 1 (69.8%)

Toxicology

Adverse EffectsNeurotoxin - Other CNS neurotoxin
Toxicity DataLC50 (mice) = 55,000 mg/m3/2h

Safety data

PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
3
rtecs
CZ5658000
ridadr
UN 1993 3/PG 2
hs_code
29036990
risk_code
11-20-39/23/24/25-23/24/25
Signal word
Danger

Chemistry & industry

Uses & manufacturing

UsesMono- and difluoroaromatic compounds are used in indicators and analytical reagents; [Ullmann]

Applications

Uses1,4-Difluorobenzene is used in method for production of prepolymers containing Polyoxymethylene block.

Upstream & downstream products

Upstream raw materials

Fluoroboric acid1-Fluoro-4-(trimethylsilyl)benzene4-Fluorobenzenediazonium tetrafluoroborate4-Fluoroaniline4-Fluorophenol

Downstream products

Hydroquinidine (anthraquinone-1,4-diyl) diether2,5-Difluoroaniline5-Fluoro-2-methylbenzothiazole2,5-DifluoronitrobenzeneFluorobenzeneSodium tetrafluoroborate1-Bromo-4-fluoro-2-nitrobenzene2,5-Difluorophenol

Related reactions

46 records
New reaction record
HRID 3966 reaction equation
HRID 3966As reactantuspto-grants-1988_02
HRID 3968 reaction equation
HRID 3968As reactantuspto-grants-1988_02
HRID 52404 reaction equation
HRID 52404As reactantuspto-grants-1997_04
HRID 208657 reaction equation
HRID 208657As reactantTraining data from https://doi.org/10.1039/C8SC04228D (6/10)
HRID 234805 reaction equation
HRID 234805As reactantuspto-grants-1997_01
HRID 273733 reaction equation
HRID 273733As reactantuspto-grants-1995_02
HRID 305746 reaction equation
HRID 305746As reactantTraining data from https://doi.org/10.1039/C8SC04228D (8/10)
HRID 341493 reaction equation
HRID 341493As reactantuspto-grants-2014_11
Page 1 of 6

Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
More actions
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color
Clear colorless to slightly yellow
Specific Gravity
1.11 · 1.110
Specific Heat Capacity
1.38 J/ · Cp(liquid): 1.38 J/(g·K), at 25℃
Merck
14 · 14,3148
BRN
1904541 · 1904541
Henry's Law Constant
1.6 · 1.6×10-3 mol/(m3Pa) at 25℃, Hiatt (2013)
Dielectric constant
2.26 · 2.2599999999999998
Major Application
environmental
InChI
1S/C6H4F2/c7-5-1-2-6(8)4-3-5/h1-4H
InChIKey
QUGUFLJIAFISSW-UHFFFAOYSA-N
SMILES
Fc1ccc(F)cc1
CAS DataBase Reference
540 · 540-36-3(CAS DataBase Reference)
EWG's Food Scores
1 · 1
FDA UNII
9 FQ2EF0Z6 · Y9FQ2EF0Z6
NIST Chemistry Reference
1 · Benzene, 1,4-difluoro-(540-36-3)
EPA Substance Registry System
1 · 1,4-Difluorobenzene (540-36-3)
UNSPSC Code
12352100 · 12352100
NACRES
22 · NA.22
Symbol(GHS)
2 · GHS02
Signal word
Danger
Hazard statements
333 · H333-H225
Precautionary statements
501 · P501-P240-P210-P233-P243-P241-P242-P280-P370+P378-P304+P312-P303+P361+P353-P403+P235
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes
F,Xn,T
Risk Statements
11 · 11-20-39/23/24/25-23/24/25
Safety Statements
16 · 16-29-33-7-45-36/37-7/9
RIDADR
1993 · UN 1993 3/PG 2
WGK Germany
3 · 3
RTECS
5658000 · CZ5658000
Hazard Note
Highly Flammable
HazardClass
3 · 3
PackingGroup
II
HS Code
29036990 · 29036990
Storage Class
3 · 3 - Flammable liquids
Hazard Classifications
2 · Flam. Liq. 2
Limited Quantities
1 L · 1.0 L (0.3 gallon) (liquid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Symbol(GHS)
GHS02
hazard_code
F,Xn,T
hazard_note
Highly Flammable
safety_code
16-29-33-7-45-36/37-7/9
hazard_class
3
Storage Class
3 - Flammable liquids
packing_group
II
Hazard statements
H333-H225
Limited Quantities
1.0 L (0.3 gallon) (liquid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Hazard Classifications
Flam. Liq. 2
Precautionary statements
P501-P240-P210-P233-P243-P241-P242-P280-P370+P378-P304+P312-P303+P361+P353-P403+P235
4-Methoxy-2-nitrobenzoic acid
1,2,4-Trifluorobenzene
4-Benzyloxyfluorobenzene
2,5-Difluorobenzoic acid
1,4-Difluoroanthraquinone

Additional notes

DefinitionChEBI: 1,4-difluorobenzene is a difluorobenzene.