1. 4 Butynediol – raw material for many other reagents
1. 4 Butynediol is an organic compound belonging to the class of alcohols. The name is also used synonymously: tetramethylene glycol, 2-butyn-1, 4-diol. The usual formula is C4H6O2, the structure is HOCH2C-CCH2OH, obtained by organic synthesis from formaldehyde and acetylene in the presence of a catalyst. Now buy butanediol in St. Petersburg you can visit the Areolab online store with online delivery.
Contents of the article:
Properties
Under normal conditions, it appears as water-soluble, colorless or light brown crystals. Aqueous solution: thick yellowish-brown transparent liquid with the smell of burnt bread. Over time, the solution may lose transparency, but this does not affect its chemical properties. Soluble in acetone and alcohols. Insoluble in benzene and ether. Poisons. Lighting.
From a chemical point of view, it is a divalent alcohol, glycol. Highly reactive and stable. Actively participates in chemical reactions of oxidation, polymerization, substitution, addition and chlorination. Interacts with halogens, carboxylic and dicarboxylic acids, hydrogen chloride and sulfide, ammonia, oxygen, hydrogen, metals and alkalis. Reacts violently with mercury salts, strong oxidizing agents, strong acids and alkalis, acid chlorides and anhydrides to an explosive state.
Application
- Raw materials for the production of butanediol (butylene glycol), betenediol, butadiene and trihydroxybutane (a glycerol substitute), very popular in the chemical industry. Polyurethanes, including acrylic acid acetylene and acrylic acid copolymers; divinyl; diisocyanates, diacetylene, tetramethylene oxide, propargylic acid and many other valuable products necessary for organic synthesis and polymer production.
- In pharmaceuticals, they are used in the production of numerous drugs.
- Metallurgy – as a brightening additive in electrolytes for electroplating (nickel plating).
- In agriculture – as an ingredient in the production of herbicides.
- Paint and varnish industry – production of paint solvents.
Precautions
Highly flammable, combustible, toxic if swallowed. Contact with skin and eyes causes chemical burns (irritation, cloudiness and redness). Since it is most often used in liquid form, vapors and aerosols are especially dangerous. Workers must use respiratory protection (respirator), safety glasses, gloves and overalls. Regular inhalation or ingestion of vapors can cause cardiovascular, renal and hepatic degeneration. Control services must ensure monitoring of the content of substances in the air of work premises.
Butaneol is considered to have low toxicity but may cause skin irritation. Even severe allergic reactions to this substance in some people cannot be ruled out. When working with it, you should use special clothing and gloves. The respiratory system must also be protected. The substance is potentially self-flammable and should be stored in a dark, cool place away from sunlight.
If the reagent comes into contact with the eyes of an injured or sick person, immediately rinse the eyes and consult a doctor. If swallowed, seek immediate medical attention.
Store in a dry, cool, well-ventilated place. The crystalline material is stored and transported in sealed polyethylene bags or multi-layer paper bags reinforced with fabric. Solutions are stored in sealed glass containers. In the laboratory – in the refrigerator.
Note: Keep away from mercury salts and strong oxidizing agents!
