1,4-Cyclohexadienedione
6 Inquiries
106-51-4
SHANGHAI
BAG
2026-03-26
Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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Product Name:
Quinone
Other Name:2,5-Cyclohexadiene-1,4-dione;p-Benzoquinone;1,4-Benzoquinone;Chinone;1,4-Cyclohexadienedione;p-Quinone;Quinone;Stearer PBQ;PBQ 2;NSC 36324;PBQ;Inhibitor PBQ;RS 404
CAS No.:106-51-4
Molecular Formula:C6H4O2
InChIKeys:InChIKey=AZQWKYJCGOJGHM-UHFFFAOYSA-N
Molecular Weight:108.09
Exact Mass:108.09
BRN:773967
EC Number:203-405-2
UNII:3T006GV98U
ICSC Number:0779
NSC Number:36324
UN Number:2587
DSSTox ID:DTXSID6020145
Color/Form:YELLOW MONOCLINIC PRISMS FROM WATER OR PETROLEUM ETHER|Greenish-yellowish solid|Pale-yellow solid.
HScode:2914 69 80
Categories:
Characteristics-
PSA:
34.1
XLogP3:0.2
Appearance:Yellow to green Powder
Density:1.318 g/cm3 @ Temp: 20 °C
Melting Point:115.7 °C
Boiling Point:180 °C
Flash Point:38°C
Refractive Index:n20/D 1.453
Water Solubility:H2O: 10 g/L (25 ºC)
Storage Conditions:2-8°C
Vapor Pressure:0.1 mm Hg ( 25 °C)
Vapor Density:3.73 (vs air)
Toxicity:Oral-rat LD50: 130 mg/kg; Oral-Mouse LDL0: 100 mg/kg
Flammability characteristics:Open flame is flammable; decomposes when heated; burning releases irritating smoke
Explosive limit:Drums containing moist quinone self heated, generating smoke and internal pressure. ... The moist material showed an exotherm at 40-50 deg C and decomposed at 60-70 deg C, ... owing to pressure impurities. Drums exposed to direct sunlight soon attain a surface temperature of 50-60 deg C.
Odor:PENETRATING ODOR RESEMBLING THAT OF CHLORINE
OH:4.60e-12 cm3/molecule*sec
Experimental Properties:SUBLIMES; DIPOLE MOMENT: 0.67|CONVERSION FACTORS: 1 MG/L IS EQUIVALENT TO 226.4 PPM & 1 PPM IS EQUIVALENT TO 0.00442 MG/L AT 25 °C, 760 MM HG|Ionization potential: 9.67 eV|Heat of fusion: 40.97 cal/g|For more Other Experimental Properties (Complete) data for 1,4-BENZOQUINONE (8 total), please visit the HSDB record page.
Air and Water Reactions:Soluble in water and denser than water. If moist it may decompose spontaneously above 140°F. This has occurred in drums, causing over-pressurization.
Reactive Group:Ketones
Reactivity Alerts:Strong Oxidizing Agent
Reactivity Profile:BENZOQUINONE acts as an oxidizing agent (NTP, 1992).
Autoignition Temperature:1040 °F (USCG, 1999)|1040 °F (560 °C)|560 °C
Heat of Combustion:656.6 Kcal/g mol @ 25 °C
Ionization Potential:9.68 eV
Flammable Limits:Combustible Solid
Physical Dangers:Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 3, Oral
Skin irritation, Category 2
Eye irritation, Category 2
Acute toxicity - Category 3, Inhalation
Specific target organ toxicity â single exposure, Category 3
Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H301 Toxic if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H331 Toxic if inhaled
H335 May cause respiratory irritation
H400 Very toxic to aquatic life
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
Response P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P321 Specific treatment (see ... on this label).
P330 Rinse mouth.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P332+P317 If skin irritation occurs: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316 Get emergency medical help immediately.
P319 Get medical help if you feel unwell.
P391 Collect spillage.
Storage P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames, NO sparks and NO smoking. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding). Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Fireproof. Separated from combustible substances, reducing agents and food and feedstuffs. Cool. Dry.
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Seller Information
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Business Type:
Manufactory
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Main Products:
Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate
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Location:
hisense intelligence valley,no 2116,of phoenix road
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Payment Terms:
TT against copy of documents,D/P,L/C
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Average lead Time:
7
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Total Annual Revenue:
Less than $1 million
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Total Employees:
11-50
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Year of Establishment:
2017
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Inquiry History6 Inquiries
Country Product Purchase Quantity Date Posted 
Jordan
1, 4-benzoquinone
100 G May 19, 2025 
Malaysia
1,4-benzoquinone
25 KG Apr 12, 2024 
Australia
P-benzoquinone/ Para-benzoquinone/ 1,4-benzoquinone 99% Yellow solid PBQ Lifechemical
1 KG Nov 19, 2023 
United States
1,4-Benzoquinone
600 KG Aug 27, 2025 
Russia
p-Benzoquinone
250 KG Feb 26, 2026 
India
P-Benzoquinone
1000.00 KG Mar 1, 2024 Post an enquiry for this product
