Maleic acid
15 Inquiries
110-16-7
pharmaceutical grade
99%
ailike
25kg/Bag
2026-06-30
API,Antibiotics,Anti cancer category
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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:
Maleic acid
Other Name:2-Butenedioic acid (2Z)-;Maleic acid;2-Butenedioic acid (Z)-;(2Z)-2-Butenedioic acid;cis-Butenedioic acid;cis-1,2-Ethylenedicarboxylic acid;Maleinic acid;Toxilic acid;2-Butenedioic acid,(Z)-;cis-2-Butenedioic acid;Scotchbond Multipurpose Etchant;Malezid CM;(2Z)-Butene-2-dioic acid;(Z)-2-Butenedioic acid;1975169-66-4
CAS No.:110-16-7
Molecular Formula:C4H4O4
InChIKeys:InChIKey=VZCYOOQTPOCHFL-UPHRSURJSA-N
Molecular Weight:116.07
Exact Mass:116.07
BRN:605762
EC Number:203-742-5
UNII:91XW058U2C
ICSC Number:1186
NSC Number:25940
UN Number:2215|3261
DSSTox ID:DTXSID8021517|DTXSID6051227|DTXSID2044008
NCI Thesaurus Code:C25951
Color/Form:Monoclinic prisms from water|White crystals from water, alcohol and benzene|Colorless crystals
HScode:29173990
Categories:
Characteristics-
PSA:
74.60000
XLogP3:-0.01
Appearance:White Powder/Solid
Density:1.590 g/cm3 @ Temp: 20 °C
Melting Point:131 °C
Boiling Point:110 °C
Flash Point:127 °C
Refractive Index:1.526
Water Solubility:H2O: 790 g/L (25 ºC)
Storage Conditions:Store at RT.
Vapor Pressure:1.34X10-5 mm Hg at 25 deg C (OECD Guideline 104 (Vapor Pressure Curve))
Vapor Density:4.0 (Air = 1)
Odor:Faint acidulous odor
Taste:Characteristic repulsive, astringent taste
PKA:1.83None
Henrys Law Constant:Henry's Law constant = 1.4X10-12 atm-cu m/mol at 25 °C (est)
Dissociation Constants:1.83|pKa1 = 1.94, pKa2 = 6.22 at 25 °C (OECD Guideline 105)
Collision Cross Section:112.5 Ų [M-H]-
Experimental Properties:Heat of combustion: -1356.3 kJ/mol (crystal)|Heat of combustion: -2,800 cal/g = -117x10+5 J/kg|log Kow = -1.3 at pH 2.5 and 20 °C|Hydroxyl radical reaction rate constant = 7.95X10-12 cu cm/molecule-sec at 25 °C (est)|Ozone reaction rate constant = 8.8X10-19 cu cm/molecule-sec at 25 °C (est)
Air and Water Reactions:Soluble in water.
Reactive Group:Acids, Carboxylic
Reactivity Profile:MALEIC ACID is a colorless to white crystalline solid. Moderately toxic. When heated to decomposition it emits irritating fumes and acrid smoke [Lewis, 3rd ed., 1993, p. 790].
Heat of Combustion:-1355.2 kJ/mol
Corrosivity:May corrode metals when wet.
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
Skin irritation, Category 2
Eye irritation, Category 2
Skin sensitization, Category 1
Specific target organ toxicity â single exposure, Category 3
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H335 May cause respiratory irritation
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.
P272 Contaminated work clothing should not be allowed out of the workplace.
P271 Use only outdoors or in a well-ventilated area.
Response P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P321 Specific treatment (see ... on this label).
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.
P333+P317 If skin irritation or rash occurs: Get medical help.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P319 Get medical help if you feel unwell.
Storage P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
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. 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
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Dry.Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place. Storage class (TRGS 510): Non Combustible Solids
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Seller Information
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Business Type:
Trader
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Main Products:
API,Antibiotics,Anti cancer category
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Location:
12A02-9, Union Building, Building 1, No. 216 Tongchuan Road, Licang District, Qingdao City, Shandong Province
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Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
15
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Total Annual Revenue:
$25 million-$50 million
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Total Employees:
201-300
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Year of Establishment:
2024
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Certifications:
Hazardous Chemicals Business License,Supplier Agreement
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Inquiry History15 Inquiries
Country Product Purchase Quantity Date Posted 
India
Maleic
25.00 MT Oct 9, 2025
India
Maleic acid
7 20' Fcl Aug 18, 2025
India
MALEIC
5 20' Fcl Aug 5, 2025
India
MALEIC acid
2 20' Fcl May 19, 2025 
United States
MALEIC ACID
1528 KG Feb 29, 2024
India
Maleic Acid (pharma grade)
10 MT Oct 30, 2023
United States
Maleic acid
25 KG Oct 17, 2023 
Malaysia
Maleic Acid
150 KG Jan 9, 2026 
Russia
maleic acid
1 20' Fcl Nov 12, 2024
Russia
maleic acid
1 20' Fcl Nov 11, 2024
India
MALEIC ACID -99%
1000.00 KG Mar 8, 2024
India
Maleic Acid (pharma grade)
10 MT Oct 28, 2023 
Pakistan
Maleic Acid
100 KG May 4, 2025
United States
MALEIC ACID
1528 KG Jan 30, 2024 
Nigeria
MALEIC ACID
1000 KG Oct 17, 2023 Post an enquiry for this product
