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Key Documents

8.01537

Sigma-Aldrich

2-Butyne-1,4-diol

(not stabilised) for synthesis

Synonym(s):

2-Butyne-1,4-diol, 1,4-Dimethoxyacetylene

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About This Item

Empirical Formula (Hill Notation):
C4H6O2
CAS Number:
110-65-6
Molecular Weight:
86.09
MDL number:
MFCD00002915
UNSPSC Code:
12352104
EC Index Number:
203-788-6
NACRES:
NA.22

vapor pressure

<1 Pa ( 20 °C)

Quality Level

200

Assay

≥99.0% (GC)

form

solid

autoignition temp.

410 °C

potency

100 mg/kg LD50, oral (Rat)

pH

4-7.5 (23 °C, 100 g/L in H2O)

bp

125-127 °C/3 hPa

mp

54-57 °C

transition temp

flash point 152 °C

solubility

3740 g/L

density

1.11 g/cm3 at 20 °C

bulk density

500 kg/m3

storage temp.

2-30°C

InChI

1S/C4H6O2/c5-3-1-2-4-6/h5-6H,3-4H2

InChI key

DLDJFQGPPSQZKI-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 54 °C
Melting range (upper value): ≤ 57 °C
Identity (IR): passes test

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 2

Storage Class Code

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

WGK

WGK 2

Flash Point(F)

305.6 °F - closed cup

Flash Point(C)

152 °C - closed cup

Certificates of Analysis (COA)

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