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Key Documents

8.41321

Sigma-Aldrich

Citraconic anhydride

for synthesis

Synonym(s):

Citraconic anhydride, Methylmaleic anhydride

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About This Item

Empirical Formula (Hill Notation):
C5H4O3
CAS Number:
616-02-4
Molecular Weight:
112.08
MDL number:
MFCD00005522
UNSPSC Code:
12352115
EC Index Number:
210-459-0
NACRES:
NA.22

vapor pressure

1.3 hPa ( 47 °C)

Quality Level

200

Assay

≥98.0% (GC)

form

liquid

potency

2600 mg/kg LD50, oral (Rat)
218 mg/kg LD50, skin (Rabbit)

bp

213-214 °C/1013 hPa

mp

7-8 °C

transition temp

flash point 111 °C

density

1.243 g/cm3 at 20 °C

InChI

1S/C5H4O3/c1-3-2-4(6)8-5(3)7/h2H,1H3

InChI key

AYKYXWQEBUNJCN-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.241 - 1.246
Identity (IR): passes test

Pictograms

CorrosionHealth hazard
GHS05,GHS08

Signal Word

Danger

Hazard Statements

H314 - H317 - H334

Hazard Classifications

Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

231.8 °F

Flash Point(C)

111 °C

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