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Applications: Methanesulfonic acid has proven to be an increasingly popular alternative to fluoboric acid or phenolsulfonic acid over the past few years, and methanesulfonate electroplating baths have been applied to tin and tin-lead alloy electroplating, many The performance of the new bath depends to a large extent on the quality of the methane sulfonic acid used. Therefore, methanesulfonic acid is a promising chemical product.
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Biochemical Series
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LAS
Product description
Chinese name | sulfonic acid | ||
English name | sulfonic acid | ||
Molecular formula | R-SO3H | ||
water soluble | Greater water solubility | ||
purpose | Make dyes, drugs, detergents | ||
kind | acid | nature | The sulfonic acid group is a strong water-soluble strong acid group, and sulfonic acid is a water-soluble strong acid compound. For example, naphthalene is soluble in ether but not in water. , while β-naphthalene sulfonic acid is soluble in water but not in ether. The sulfonic acid group in the aromatic sulfonic acid molecule can be replaced by a hydroxyl group and a cyano group, and it is an intermediate for the preparation of phenol and nitrile. |
Purpose | Used as analytical reagent, preservative, bleach and reducing agent. | ||
Notes | Hazard Overview: Harmful if swallowed, causing severe burns. | ||
Potential health effects | Eye: Causes eye burns. Skin: Causes skin burns, can be absorbed through the skin. Ingestion: Harmful if swallowed. Cause Gastrointestinal burns. Inhalation: Burns respiratory tract if inhaled. | ||
First Aid | Eyes: Remove and isolate contaminated clothing and shoes. Wash skin with soap and water. Note that the patient is warm and quiet. Ensure that medical personnel understand the personal protection knowledge related to this substance and pay attention to self-protection. | ||
Skin: Get medical assistance immediately and rinse skin and clothing attachments with plenty of water for at least 15 minutes to remove. | |||
Ingestion: Do not induce vomiting. Seek medical assistance immediately. | |||
Inhalation: Get medical assistance right away. Remove skin and clothing attachments and immediately remove to a ventilated place. If breathing is difficult, give oxygen. | |||
Leak emergency treatment | General Information: Use appropriate personal protective equipment. Spills/Leaks: Absorb spilled liquid (eg vermiculite, sand or soil) with inert material, do not allow the chemical to enter and diffuse. Handling and Storage | ||
handling | Do not breathe dust, vapour, mist or gas. Do not come into direct contact with eyes, skin or clothing. Do not ingest or inhale. | ||
Storage | Store in a cool, dry place. | ||
methanesulfonic acid | Introduction | Methanesulfonic acid, also known as methanesulfonic acid, is a strong organic acid, non-oxidizing acid. | |
Apply | Methanesulfonic acid is an important organic synthesis and pharmaceutical intermediate, often used as a solvent, alkylation and lipidation reagent in organic synthesis; in addition, it It is also an ideal leveling agent and brightening agent. | ||
In the past few years, methanesulfonic acid has proven to be an increasingly popular alternative to fluoboric acid or phenolsulfonic acid, methanesulfonate Electroplating baths have been applied to tin and tin-lead alloy electroplating, and the performance of many new baths depends largely on the quality of the methanesulfonic acid used. Therefore, methanesulfonic acid is a promising chemical product. | |||
Methanesulfonic acid is used as solvent, catalyst for alkylation esterification and polymerization. The 99% content of this product is mainly used in medicine, and the 70% content of this product is mainly used in the electroplating industry. | |||
Physical and chemical properties | Methanesulfonic acid appears as colorless or light yellow transparent viscous oily liquid, solid at low temperature. | ||
Melting point 20℃, boiling point 167℃(13.33kPa), 122℃(0.133kPa). | |||
The relative density is 1.4812 (18°C), and the refractive index is 1.4317 (16°C). | |||
Good thermal stability, resistant to boiling water and hot lye (does not decompose to boiling water and hot lye), soluble in water, alcohol and ether, insoluble in alkane , benzene, toluene, etc. | |||
It has a strong corrosive effect on metal iron, copper, silver, lead, etc., but it does not corrode 18--8 stainless steel when it contains 0.5-1% sulfuric acid. Therefore, stainless steel can be used as receptacle and production equipment. | |||
The commercially available methanesulfonic acid is mostly a 70% aqueous solution, and the appearance is colorless or slightly yellow transparent liquid. The specific gravity of a 70% aqueous solution is about 1.35, and the freezing point is -70°C. | |||
packaging | Methanesulfonic acid is generally packed in plastic drums or steel-plastic drums with a net weight of 30kg, 250kg, or according to user requirements. | ||
Storage and safety protection | Methylsulfonic acid is an acidic corrosive product (Class 8.1), Dangerous Regulation Number: 81626. It is highly irritating to human tissues such as eyes, skin and mucous membranes, so attention should be paid to protection in contact with it. When loading and unloading, it should be handled with care. Rinse immediately with water after contact with skin. | ||
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