顺丁烯二酸

Description

Maleic acid is identified by CAS 110-16-7, molecular formula C4H4O4 and molecular weight 116.01 g/mol. UNII 91XW058U2C; ChEBI 18300; InChIKey VZCYOOQTPOCHFL-UPHRSURJSA-N. Melting Point: 266 to 268 °F (NTP, 1992); Melting Point: 130.5; Melting Point: 130.5 °C.

Identification

CAS Registry Number	110-16-7
PubChem CID	444266
Molecular formula	C4H4O4
Molecular weight	116.01 g/mol
IUPAC name	(Z)-but-2-enedioic acid
InChIKey	VZCYOOQTPOCHFL-UPHRSURJSA-N
UNII (FDA)	91XW058U2C
ChEBI ID	CHEBI:18300

Computed Descriptors

Molecular Weight	116.07
XLogP3	-0.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	2
Exact Mass	116.01095860
Monoisotopic Mass	116.01095860
Topological Polar Surface Area	74.6
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Melting Point	266 to 268 °F (NTP, 1992)
Melting Point	130.5
Melting Point	130.5 °C
Melting Point	131 °C
Flash Point	127 °C
Solubility	441000
Solubility	In water, 441,000 mg/L at 25 °C
Solubility	441 mg/mL at 25 °C
Density	1.590 g/cu cm at 20 °C
Density	1.59 @ 20°C

Physical description & handling notes

• Maleic acid is a colorless crystalline solid having a faint odor. It is combustible though it may take some effort to ignite. It is soluble in water. It is used to make other chemicals and for dyeing and finishing naturally occurring fibers.
• Dry Powder; Dry Powder; Large Crystals; Liquid
• Colorless or white solid; [HSDB] White crystalline powder; [MSDSonline]
• Solid
• WHITE CRYSTALS.
• Monoclinic prisms from water

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CIR / INCI: Cosmetic ingredients (Maleic Acid) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	0.2% (3 / 1974)

GHS Hazard Classification

GHS notification summary	0.2% (3 / 1974)
Reported hazard statements	H302, H315, H317, H319, H335, H312 (20%), H318 (77.8%), H370

Documented Uses

• Used to make alkyd and polyester resins, surface coatings, lubricant additives, plasticizers, copolymers, drugs, and agricultural chemicals; Also used to retard rancidity of oils and to dye and finish textiles (wool, cotton, and silk); [HSDB]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Manufacture of artificial resins; to retard rancidity of fats and oils in 1:10,000 (these are said to keep 3 times longer than those without the acid); dyeing and finishing wool, cotton, and silk; preparing the maleate salts of antihistamines and similar drugs.
• Organic synthesis (malic, succinic, aspartic, tartaric, propionic, lactic, malonic and acrylic acids); dyeing and finishing of cotton, wool and silk; preservative for oils and fats.
• Maleic anhydride, maleic acid, and fumaric acid are multifunctional chemical intermediates that find applications in nearly every field of industrial chemistry.
• CHEM INT FOR COMONOMERS IN ADHESIVES, FUMARIC ACID, ALKYD RESINS, & SYNTHETIC OILS

Synonyms

maleic acid; 110-16-7; cis-butenedioic acid; Toxilic acid; Maleinic acid; Malenic acid; (2Z)-but-2-enedioic acid; (Z)-Butenedioic acid; cis-1,2-Ethylenedicarboxylic acid; 2-Butenedioic acid (Z)-; 2-Butenedioic acid (2Z)-; (Z)-2-Butenedioic acid; Kyselina maleinova; Butenedioic acid, (Z)-; (Z)-but-2-enedioic acid; cis-2-Butenedioic acid

Frequently Asked Questions

What are the CAS number and molecular formula of Maleic acid?

CAS 110-16-7; molecular formula C4H4O4; molecular weight 116.01 g/mol.

What other names is Maleic acid known by?

maleic acid, 110-16-7, cis-butenedioic acid, Toxilic acid, Maleinic acid, Malenic acid.

What is the regulatory status of Maleic acid?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; CIR / INCI: Cosmetic ingredients (Maleic Acid) -> CIR (Cosmetic Ingredient Review).

Is Maleic acid classified as hazardous?

0.2% of GHS notifications report no hazard classification (3 of 1974).

What are the key physical properties of Maleic acid?

Melting Point: 266 to 268 °F (NTP, 1992); Melting Point: 130.5; Melting Point: 130.5 °C; Melting Point: 131 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.