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Merck

8.45002

Maleic acid

Msynthplus

Synonym(s):

cis-Butenedioic acid, Toxilic acid

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About This Item

Linear Formula:
HO2CCH=CHCO2H
CAS Number:
Molecular Weight:
116.07
EC Index Number:
203-742-5
UNSPSC Code:
12352106
Beilstein/REAXYS Number:
605762
MDL number:
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vapor pressure

<0.1 hPa ( 20 °C)

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

Analysis Note

Colour (visual): white
Appearance of substance (visual): powder
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

Legal Information

MSYNTH is a trademark of Merck KGaA, Darmstadt, Germany


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pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk

WGK 1



Certificates of Analysis (COA)

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