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  • 8.41420 - 2,5-Dihydroxy-1,4-dithiane

8.41420 EMD Millipore


2,5-Dihydroxy-1,4-dithiane for synthesis. CAS 40018-26-6, pH 4.9 (3.9 g/l, H₂O)., for synthesis

Synonym: 1,4-Dithiane-2,5-diol

  • CAS Number 40018-26-6

  • Linear Formula C₄H₈O₂S₂

  • Molecular Weight 152.24 g/mol

  •  EC Number 254-751-6



Related Categories Biochemicals and Reagents, Building Blocks, Chemical Synthesis, Heterocyclic Building Blocks
packaging   50 g in Glass bottle (8414200050)
solubility   3.9 g/l
autoignition temp.   310 °C
mp   110 °C (decomposition)
pH   4.9 (3.9 g/l, H₂O)
LD 50 oral   LD50 Rat 200 - 2000 mg/kg
storage temp.   Store below +30°C.
specifications   Assay (of S): ≥ 95.0 %
  Identity (IR): passes test

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Safety Information

HS Code 
2934 99 90
Hazard Statement(s) 
H301: Toxic if swallowed.
H317: May cause an allergic skin reaction.
H318: Causes serious eye damage.
H412: Harmful to aquatic life with long lasting effects.
Precautionary Statement(s) 
P262: Do not get in eyes, on skin, or on clothing.
P273: Avoid release to the environment.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Storage class 
6.1C Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK 2 water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS06  GHS06
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 2811 , 6.1, III
Declaration (transport by air) IATA-DGR 
UN 2811 , 6.1, III
Declaration (transport by sea) IMDG-Code 
UN 2811 , 6.1, III
Categories of danger 
harmful, irritant, sensitizing, dangerous for the environment
R Phrase 
R 22-41-43-52/53
Harmful if swallowed.Risk of serious damage to eyes.May cause sensitisation by skin contact.Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase 
S 24-26-37/39-61
Avoid contact with skin.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves and eye/face protection.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
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