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LC1070 2-Butyne-1,4-diol
(not stabilised) for synthesis

 

Order number Packaging Quantity Price €
AC28070 Glass bottle 100 g 11.88
AC28070 Glass bottle 500 g 22.95

 

Product information
Synonyms 1,4-Dimethoxyacetylene
Hill Formula C4H6O2
HS Code 2905 39 95
EC number 203-788-6
Molar mass 86.09 g/mol
EC index number 603-076-00-9
CAS number 110-65-6

 

Chemical and physical data
Ignition temperature ca.410 °C DIN 51794
Solubility 3740 g/l (25 °C)
Melting point 54 – 57 °C
Molar mass 86.09 g/mol
Density 1.11 g/cm3 (20 °C)
Bulk density 500 kg/m3
pH value 4 – 7.5 (100 g/l, H2O, 23 °C)
Boiling point 125 – 127 °C (3 hPa)
Vapor pressure < - 1 hPa (20 °C)
Flash point 152 °C

 

Safety information
R Phrase R 21-23/25-34-43-48/22
Harmful in contact with skin.Toxic by inhalation and if swallowed.Causes burns.May cause sensitization by skin contact.Harmful: danger of serious damage to health by prolonged exposure if swallowed.
S Phrase S 25-26-36/37/39-45-46
Avoid contact with eyes.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).If swallowed, seek medical advice immediately and show this container or label
Categories of danger toxic, corrosive, sensitizing
Hazard Symbol

Toxic

Corrosive

RTECS ES0525000
Storage class 6.1A Combustible substances, toxic
WGK WGK 2 water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).

 

Transport information
Declaration (transport by sea) IMDG-Code UN 2716 1,4-BUTYNEDIOL, 6.1, III
Declaration (transport by air) IATA-DGR UN 2716 1,4-BUTYNEDIOL, 6.1, III

 

Toxicological data
LD 50 oral LD50 rat 100 mg/kg
LD 50 dermal LD50 rat 659 mg/kg

 

Specifications
Assay (GC, area%) ≥ 99 %
Melting range
– lower value
≥ 54 °C
– upper value ≤ 57 °C
Identity (IR) passes test

 

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