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110-16-7

Basic Information
CAS No.: 110-16-7
Name: 2-Butenedioicacid (2Z)-
Molecular Structure:
Molecular Structure of 110-16-7 (2-Butenedioicacid (2Z)-)
Formula: C4H4O4
Molecular Weight: 116.08
Synonyms: cis-1,2-Ethylenedicarboxylic acid;cis-2-Butenedioicacid;cis-Butenedioic acid;cis-Butene dioic acid;2-Butenedioicacid (Z)-;Maleic acid (8CI);(2Z)-Butene-2-dioic acid;(Z)-2-Butenedioic acid;2-Butenedioic acid, (Z)-;Malezid CM;Scotchbond MultipurposeEtchant;Toxilic acid;(2Z)-but-2-enedioic acid;(2Z)-2-Butenedioic acid;
EINECS: 203-742-5
Density: 1.499 g/cm3
Melting Point: 137-140 °C(lit.)
Boiling Point: 355.5 °C at 760 mmHg
Flash Point: 183 °C
Solubility: 790 g/L (25 °C) in water
Appearance: White solid
Hazard Symbols: IrritantXi
Risk Codes: 22-36/37/38
Safety: 26-28-37
Transport Information: UN 2215
PSA: 74.60000
LogP: -0.28820
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  • MALEIC ACID

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Consensus Reports

Reported in EPA TSCA Inventory.

Standards and Recommendations

DOT Classification:  8; Label: Corrosive

Specification

The Maleic acid, with the CAS registry number 110-16-7 and EINECS registry number 203-742-5, has the IUPAC name of (Z)-but-2-enedioic acid. And the molecular formula of this chemical is C4H4O4. It is a kind of white solid, and belongs to the product category of Miscellaneous. This dicarboxylic acid is the cis isomer of butenedioic acid, whereas fumaric acid is the trans isomer.

The physical properties of Maleic acid are as following: (1)ACD/LogP: -0.01; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 4; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 2; (10)Polar Surface Area: 52.6 Å2; (11)Index of Refraction: 1.526; (12)Molar Refractivity: 23.76 cm3; (13)Molar Volume: 77.4 cm3; (14)Polarizability: 9.42×10-24cm3; (15)Surface Tension: 67.6 dyne/cm; (16)Density: 1.499 g/cm3; (17)Flash Point: 183 °C; (18)Enthalpy of Vaporization: 65.99 kJ/mol; (19)Boiling Point: 355.5 °C at 760 mmHg; (20)Vapour Pressure: 5.19E-06 mmHg at 25°C.

Preparation of Maleic acid: In industry, it is derived by hydrolysis of maleic anhydride, the latter being produced by oxidation of benzene or butane. It can also be prepared by the hydrolyzation of maleic anhydride, and the maleic anhydride can be obtained from malic acid in the presence of acetyl chloride.

Maleic acid can also be prepared by the hydrolyzation of maleic anhydride, and the maleic anhydride can be obtained from malic acid in the presence of acetyl chloride

Uses of Maleic acid: It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid has few applications. It is also used in pesticide marathon, fumaric acid, unsaturated polyester and dyeing auxiliary.

You should be cautious while dealing with this chemical. It irritates eyes, respiratory system and skin, and it is also harmful if swallowed. Therefore, you had better take the following instructions: Wear suitable gloves, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer).

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(O)\C=C/C(=O)O
(2)InChI: InChI=1/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-
(3)InChIKey: VZCYOOQTPOCHFL-UPHRSURJBG

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 2400mg/kg (2400mg/kg)   Biochemical Journal. Vol. 34, Pg. 1196, 1940.
rabbit LD50 skin 1560mg/kg (1560mg/kg) BEHAVIORAL: TREMOR BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets. Vol. 7-4/1970,
rat LC50 inhalation > 720mg/m3/1H (720mg/m3)   BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets. Vol. 7-4/1970,
rat LD50 oral 708mg/kg (708mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: MUSCLE WEAKNESS

GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH
BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets. Vol. 7-4/1970,