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8.00147

Acetylenedicarboxylic acid

for synthesis

Synonym(s):

Acetylenedicarboxylic acid, Butynedioic acid

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About This Item

Empirical Formula (Hill Notation):
C4H2O4
CAS Number:
142-45-0
Molecular Weight:
114.06
EC Index Number:
205-536-0
UNSPSC Code:
12352106
MDL number:
MFCD00004362
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Quality Segment

200

assay

≥97.0% (acidimetric)

form

powder

mp

180-187 °C

transition temp

flash point 131 °C

bulk density

550 kg/m3

InChI

1S/C4H2O4/c5-3(6)1-2-4(7)8/h(H,5,6)(H,7,8)

InChI key

YTIVTFGABIZHHX-UHFFFAOYSA-N

Analysis Note

Assay (acidimetric): ≥ 97.0 %
Identity (IR): passes test

pictograms

Skull and crossbones
GHS06

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

wgk

WGK 3

flash_point_c

131 °C

flash_point_f

267.8 °F

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

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