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2,4-Dichlorobenzaldehyde

HCID 13404
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Basic information

CAS
874-42-0
Standard SMILES
O=Cc1ccc(Cl)cc1Cl
InChIKey
YSFBEAASFUWWHU-UHFFFAOYSA-N
Molecular formula
C7H4Cl2O
Average molar mass
175.01 g/mol
Monoisotopic mass
173.96392011

Overview

2,4-dichlorobenzaldehyde appears as white crystalline solid or off-white chunky solid with black specks and a pungent odor. Average shelf life 1 year in a closed container. (NTP, 1992)

Names & identifiers

Preferred name
2,4-Dichlorobenzaldehyde
IUPAC
2,4-dichlorobenzaldehyde
English name
2,4-Dichlorobenzaldehyde
Molecular formula
C7H4Cl2O
Molecular weight
175.01

Names & synonyms

2,4-DICHLOROBENZALDEHYDE874-42-0Benzaldehyde, 2,4-dichloro-CCRIS 6013DTXSID1022130NSC 8762EINECS 212-861-1UNII-Z08QL2124RAI3-16063Z08QL2124RNSC-8762DTXCID302130
Show more names
DICHLOROBENZALDEHYDE2,4-DCADAKOS BBS-000031962,4-DichlorobenzaldeMiconazole Impurity 192,4-dichloro-benzaldehyd4-DichlorobenzenaldehydeDICHLOROBENZALDEHYDE(2,4-)2,4-Dichlorobenzenaldehyde
O,P-DICHLOROBENZALDEHYDEDICHLOROBENZALDEHYDE, 2,4-2,4-DICHLOROPHENYLCARBOXALDEHYDERefChem:82375212-861-1InChI=1/C7H4Cl2O/c8-6-2-1-5(4-10)7(9)3-6/h1-4YSFBEAASFUWWHU-UHFFFAOYSA-N2,4-dichloro-benzaldehyde

Database identifiers

CAS
874-42-0
PubChem CID
13404
DTXSID
DTXSID1022130
ChEMBL
CHEMBL1531235
UNII
Z08QL2124R
EC Number
212-861-1
Nikkaji
J30.720C

Properties

Computed structural properties

XLogP
3
Topological polar surface area
17.1 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
1
Rotatable bonds
1
Heavy atoms
10
Formal charge
0
Complexity
127

Experimental & physicochemical properties

SpringerMaterials PropertiesNuclear quadrupole resonance spectroscopy
Density1.33 at 212 °F (NTP, 1992) - Denser than water; will sink
Solubilityless than 1 mg/mL at 75 °F (NTP, 1992)
Flash Point275 °F (NTP, 1992)
Boiling Point451 °F at 760 mmHg (NTP, 1992)
Melting Point156 to 163 °F (NTP, 1992)
Physical Description2,4-dichlorobenzaldehyde appears as white crystalline solid or off-white chunky solid with black specks and a pungent odor. Average shelf life 1 year in a closed container. (NTP, 1992)

Physicochemical properties

Melting point
64 · 64-69 °C (lit.)
Boiling point
233 °C · 233 °C (lit.)

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 · 4 items

Danger

H314 (96.2%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P264+P265, P273, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P391, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 79 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Regulatory Information · 2 items

Chemical: Benzaldehyde, 2,4-dichloro-

2,4-Dichlorobenzaldehyde: Does not have an individual approval but may be used under an appropriate group standard

DOT LabelCorrosive
Fire HazardsThis compound is combustible. (NTP, 1992)
Health Hazards · 1 item

SYMPTOMS: Symptoms of exposure to this chemical are eye, skin and upper respiratory tract irritation. Other symptoms of exposure may include a burning sensation, shortness of breath, headache, laryngitis, nausea and vomiting. Inhalation may be fatal as a result of spasm, inflammation and edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.

Reactive GroupAldehydes
Reactivity Profile2,4-DICHLOROBENZALDEHYDE is incompatible with iron, oxygen and oxygen-containing materials. It is also incompatible with strong oxidizers and strong bases. (NTP, 1992)
Air and Water ReactionsSensitive to light. May also be sensitive to prolonged exposure to air and moisture. Insoluble in water.

Chemistry & industry

Uses & manufacturing

General Manufacturing InformationBenzaldehyde, 2,4-dichloro-: ACTIVE
Applications · 3 items

Uses2,4-Dichlorobenzaldehyde is used in the synthesis of platelet aggregation inhibitors. Also used in the preparation of novel Schiff bases containing quinazolinone rings.

Uses2,4-Dichlorobenzaldehyde was used in the solid-phase synthesis of a series of indole-based peptoids.

General DescriptionWhite crystalline solid or off-white chunky solid with black specks and a pungent odor. Average shelf life 1 year in a closed container.

Upstream & downstream products

Upstream raw materials

alpha,alpha,2,4-TetrachlorotolueneAcetylacetone2,4-DichlorotolueneChlorineMetallic oxides2,4-Dichlorobenzyl chloride2,5-DichlorobenzaldehydeMethanediol, (2,4-dichlorophenyl)-, diacetate(NE)-N-[(2,4-dichlorophenyl)methylidene]hydroxylamine2,4-Dichlorobenzyl mercaptan

Related reactions

204 records
New reaction record
HRID 9050 reaction equation
HRID 9050As reactantuspto-grants-2006_08
HRID 18646 reaction equation
HRID 18646As reactantuspto-grants-2010_06
HRID 18647 reaction equation
HRID 18647As reactantuspto-grants-2010_06
HRID 22724 reaction equation
HRID 22724As reactantuspto-grants-2005_02
HRID 31179 reaction equation
HRID 31179As reactantuspto-grants-2008_09
HRID 36898 reaction equation
HRID 36898As reactantuspto-grants-1995_05
HRID 107959 reaction equation
HRID 107959As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
HRID 117957 reaction equation
HRID 117957As reactantTraining data from https://doi.org/10.1039/C8SC04228D (2/10)
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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
More actions
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Density
1.3456 · 1.3456 (rough estimate)
bulk density
700 kg/m3 · 700kg/m3
refractive index
1.5756 · 1.5756 (estimate)
Flash point
135 °C · 135 °C
storage temp.
30 °C · Store below +30°C.
form
Crystalline Powder, Crystals and/or Chunks
color
Light yellow to beige
Water Solubility
0.1 g/100 · <0.1 g/100 mL at 24 ºC
Sensitive
Air Sensitive
BRN
471601 · 471601
InChI
1S/C7H4Cl2O/c8-6-2-1-5(4-10)7(9)3-6/h1-4H
InChIKey
YSFBEAASFUWWHU-UHFFFAOYSA-N
SMILES
[H]C(=O)c1ccc(Cl)cc1Cl
CAS DataBase Reference
874 · 874-42-0(CAS DataBase Reference)
FDA UNII
8 QL2124R · Z08QL2124R
NIST Chemistry Reference
2 · Benzaldehyde, 2,4-dichloro-(874-42-0)
EPA Substance Registry System
2 · Benzaldehyde, 2,4-dichloro- (874-42-0)
UNSPSC Code
12352114 · 12352114
NACRES
22 · NA.22
Symbol(GHS)
5 · GHS05,GHS09
Signal word
Danger
Hazard statements
314 · H314-H411
Precautionary statements
260 · P260-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
PPE
3 · Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes
C,N,Xi
Risk Statements
34 · 34-51/53-36/37/38
Safety Statements
26 · 26-36/37/39-45-61-37/39
RIDADR
3261 · UN 3261 8/PG 2
WGK Germany
2 · 2
Autoignition Temperature
440 °C · 440 °C
Hazard Note
Corrosive
TSCA
TSCA listed
HazardClass
8 · 8
PackingGroup
III
HS Code
29130000 · 29130000
Storage Class
8 A · 8A - Combustible corrosive hazardous materials
Hazard Classifications
2 Eye · Aquatic Chronic 2Eye Dam. 1Skin Corr. 1B
Toxicity
50 orally · LD50 orally in Rabbit: 3470 mg/kg
Limited Quantities
1 Kg · 1 Kg (2.2 lbs) (solid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Hazard Classes and CategoriesSkin Corr. 1C (96.2%)

Safety & protection

Fire FightingFires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
First Aid · 1 item

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Nonfire Spill Response · 1 item

SMALL SPILLS AND LEAKAGE: Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with 60-70% ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with 60-70% ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

Isolation and EvacuationExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
Personal Protective Equipment (PPE)MINIMUM PROTECTIVE CLOTHING: If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.

Safety data

PPE
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
wgk
2
tsca
TSCA listed
ridadr
UN 3261 8/PG 2
hs_code
29130000
Toxicity
LD50 orally in Rabbit: 3470 mg/kg
risk_code
34-51/53-36/37/38
Signal word
Danger
Symbol(GHS)
GHS05,GHS09
hazard_code
C,N,Xi
hazard_note
Corrosive
safety_code
26-36/37/39-45-61-37/39
hazard_class
8
Storage Class
8A - Combustible corrosive hazardous materials
packing_group
III
Hazard statements
H314-H411
Limited Quantities
1 Kg (2.2 lbs) (solid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
Hazard Classifications
Aquatic Chronic 2Eye Dam. 1Skin Corr. 1B
Autoignition Temperature
440 °C
Precautionary statements
P260-P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
2,4-Dichlorophenylacetic acid
2,4-Dichlorobenzaldehyde oxime
1,3-Dichloro-4-iodobenzene
2,4-Dichlorobenzyl alcohol
Formic acid
2,4-Dichlorobenzoyl chloride

Downstream products

DiniconazoleDiclobutrazol2,4-Dichloro-5-nitrobenzalehyde2,4-Dichlorobenzoic acid2,4-Difluorobenzaldehyde