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8.00380

Sigma-Aldrich

Maleic acid

for synthesis

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Synonym(s):
cis-Butenedioic acid, Toxilic acid
Linear Formula:
HO2CCH=CHCO2H
CAS Number:
Molecular Weight:
116.07
Beilstein:
605762
MDL number:
EC Index Number:
203-742-5

vapor pressure

<0.1 hPa ( 20 °C)

Quality Level

Assay

≥99% (acidimetric)

form

powder

potency

708 mg/kg LD50, oral (Rat)
1560 mg/kg LD50, skin (Rabbit)

pH

1.3 (20 °C, 100 g/L in H2O)

mp

130-135 °C (lit.)

solubility

478.8 g/L

density

1.59 g/mL at 25 °C (lit.)

bulk density

750‑800 kg/m3

storage temp.

2-30°C

SMILES string

OC(=O)\C=C/C(O)=O

InChI

1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-

InChI key

VZCYOOQTPOCHFL-UPHRSURJSA-N

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This Item
M0375913243912735
Maleic acid for synthesis

Sigma-Aldrich

8.00380

Maleic acid

Maleic acid ReagentPlus&#174;, &#8805;99% (HPLC)

Sigma-Aldrich

M0375

Maleic acid

Maleic acid &#8805;99.5% (HPLC), &lt;=0.5% water

Sigma-Aldrich

913243

Maleic acid

Maleic acid electronic grade, &#8805;99.97% trace metals basis, water &lt;=350 ppm

Sigma-Aldrich

912735

Maleic acid

form

powder

form

powder

form

powder

form

powder

mp

130-135 °C (lit.)

mp

130-135 °C (lit.)

mp

130-135 °C (lit.), 137-140 °C (lit)

mp

130-135 °C (lit.)

solubility

478.8 g/L

solubility

-

solubility

-

solubility

-

density

1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 20 °C (lit.), 1.59 g/mL at 25 °C (lit.)

density

1.59 g/mL at 25 °C (lit.)

storage temp.

2-30°C

storage temp.

-

storage temp.

-

storage temp.

-

Analysis Note

Assay (HPLC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 130 °C
Melting range (upper value): ≤ 135 °C
Assay (acidimetric): ≥ 99.0 %
Identity (IR): passes test

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 1


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