NSC 163978

NSC 163978 - Names and Identifiers

Name	2,4,5-Trimethylbenzenesulfonic acid
Synonyms	NSC 163978 pseudocumene-5-sulfonicacid PSEUDOCUMENE-5-SULFONIC ACID 2,4,5-TRIMETHYLBENZENSULFONIC ACID 2,4,5-Trimethylbenzenesulfonic acid 2,4,5-TRIMETHYLBENZENESULFONIC ACID Benzenesulfonic acid, 2,4,5-triMethyl- 1,2,4-Trimethyl-5-benzenesulfonic acid
CAS	3453-84-7
EINECS	200-258-5

NSC 163978 - Physico-chemical Properties

Molecular Formula	C9H12O3S
Molar Mass	200.25
Density	1.243
Melting Point	110.5-112℃
Storage Condition	2-8°C
MDL	MFCD00024913

NSC 163978 - Risk and Safety

Hazard Symbols	C - Corrosive
Risk Codes	34 - Causes burns
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

NSC 163978 - Introduction

2,4, acid is an organic compound with the chemical formula C10H13SO3.

Nature:
-Appearance: 2,4, acid is white crystalline powder.
-Melting point: Its melting point is about 116-118 degrees Celsius.
-Solubility: 2,4, acid can be dissolved in alcohol and ether solvents, but the solubility in water is low.
-Stability: It is relatively stable at room temperature.

Use:
2,4, acid is commonly used as an acid catalyst in organic synthesis to promote esterification, addition reactions, and cyclization reactions. It can also be used to prepare chemicals such as dyes, fluorescent dyes, coatings and pharmaceutical intermediates.

Preparation Method:
2,4, acid is mainly prepared by the alkylation of benzene sulfonic acid with methyl. The specific preparation method is to react benzene sulfonic acid with excess methyl alkylating agent (such as methanol, methyl bromide, etc.) under appropriate conditions.

Safety Information:
2,4, acid is currently considered to be less toxic. However, as a chemical, ingestion or exposure to excess may cause irritation or allergic reactions. When using, you should pay attention to protective measures, avoid contact with skin and eyes, and keep away from open flames and heat sources. In case of accidental contact, rinse immediately with plenty of water. If any uncomfortable symptoms appear, seek medical attention immediately. During storage, it should be placed in a dry, dark and well-ventilated place, away from fire and oxidizing agents.

Last Update：2024-04-09 20:45:29