3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide

C12H11Cl2NO

CAS23950-58-5
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS09 Gefahrensymbol: Umweltgefährlich – Umwelt
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Identification

CAS Number
23950-58-5
EC Number
245-951-4
UN Number
3077
Index Number
616-055-00-4
PubChem CID
32154

Physical-chemical properties

Molecular Formula
C12H11Cl2NO
Molar Mass
256.12 g/mol
IUPAC Name
3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide

Chemical Identifiers

InChI
InChI=1S/C12H11Cl2NO/c1-4-12(2,3)15-11(16)8-5-9(13)7-10(14)6-8/h1,5-7H,2-3H3,(H,15,16)
InChI Key
PHNUZKMIPFFYSO-UHFFFAOYSA-N

Overview

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide (CAS 23950-58-5) is a chlorinated benzamide compound with selective herbicidal properties and aquatic toxicity concerns. This specialized chemical compound belongs to the benzamide family of herbicides, characterized by its distinctive molecular structure featuring two chlorine atoms at the 3,5 positions of the benzene ring and a methylbutynyl substituent on the amide nitrogen. With a molecular formula of C12H11Cl2NO and molecular weight of 256.12 g/mol, this substance exhibits specific biological activity that makes it valuable in agricultural applications. The compound presents important safety considerations due to its classification as a Category 2 carcinogen and its significant environmental impact on aquatic ecosystems, reflected in its Aquatic Acute 1 and Aquatic Chronic 1 hazard classifications. The GHS08 and GHS09 pictograms indicate both health hazards and environmental dangers, requiring careful handling protocols and appropriate personal protective equipment during use. In industrial applications, 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide serves primarily as a selective herbicide for crop protection, offering effective weed control while maintaining crop safety when properly applied. It also finds use in research and development of new agricultural formulations and as an intermediate in the synthesis of related compounds. Like other benzamide herbicides in the same chemical family as 4-methyl-N-phenyl-6-prop-1-ynylpyrimidin-2-amine, it demonstrates selective activity against specific plant species. The compound requires classification as ADR Class 9 for transportation, indicating it is a miscellaneous dangerous substance requiring special handling during shipping and storage operations. OYSI provides this technical grade chemical to qualified industrial customers across Europe, ensuring proper documentation and regulatory compliance for all shipments.

Safety & Classification

Warning
Classification:

Carc. 2; Aquatic Acute 1; Aquatic Chronic 1

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H351

Suspected of causing cancer.

H400

Very toxic to aquatic life.

H410

Very toxic to aquatic life with long lasting effects.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Transport (ADR)

UN Number3077
ADR Class9
Packing GroupIII
Tunnel Code-
Proper Shipping NamePropyzamid (ISO)
Marine PollutantNo

Frequently Asked Questions

What is 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is an organic chemical compound with the molecular formula C12H11Cl2NO and CAS number 23950-58-5. This benzamide derivative has a molecular weight of 256.12 g/mol and contains two chlorine substituents on the benzene ring along with a specialized alkyne-containing side chain. It is classified as a Category 2 carcinogen and poses significant environmental hazards to aquatic life.

What are the physicochemical properties of 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is a solid organic compound at room temperature with a molecular weight of 256.12 g/mol. The compound contains both aromatic and alkyne functional groups, contributing to its chemical stability. Its physicochemical properties are influenced by the presence of two chlorine atoms and the amide linkage, which affect its polarity and potential interactions with other substances.

What is 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide used for?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is primarily used as a chemical intermediate in pharmaceutical and agrochemical synthesis. Its unique structural features, including the alkyne functionality and dichlorobenzamide core, make it valuable for developing specialized compounds. The substance serves as a building block in organic synthesis processes where specific reactivity patterns are required for target molecule construction.

How to handle 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide safely?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to minimize exposure. Given its carcinogenic classification (Carc. 2), avoid inhalation, skin contact, and ingestion. Use proper handling techniques, ensure adequate training, and implement strict hygiene measures when working with this substance.

How to store 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide correctly?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide should be stored in a cool, dry, well-ventilated area away from incompatible materials. Keep containers tightly closed and properly labeled according to GHS requirements. Store away from heat sources, direct sunlight, and moisture. Given its environmental hazards (Aquatic Acute 1, Aquatic Chronic 1), ensure secondary containment to prevent environmental release and maintain inventory records for regulatory compliance.

What to do in case of contact with 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide?

Immediate action is required upon contact with 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water. In case of eye contact, rinse immediately with plenty of water for at least 15 minutes. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician and provide the safety data sheet.

How to dispose of 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide properly?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide must be disposed of through licensed hazardous waste disposal facilities due to its carcinogenic properties and environmental hazards. Do not discharge into sewers, waterways, or soil. Collect waste in appropriate containers, properly labeled and segregated from incompatible materials. Follow local, national, and European waste regulations including the Waste Framework Directive. Maintain disposal records for regulatory compliance and traceability.

How to transport 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transport purposes. This classification requires specific packaging, labeling, and documentation according to European transport regulations. Use UN-approved packaging and ensure proper shipping papers accompany the shipment. Drivers must have appropriate ADR training, and vehicles must display required placarding and safety equipment.

Is 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide subject to special regulations?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is subject to REACH registration requirements in Europe and must comply with CLP classification and labeling regulations. Although not currently listed as a SVHC, its Carc. 2 classification subjects it to specific handling and workplace exposure requirements. Users must implement risk management measures, maintain safety data sheets, and ensure proper worker training. Authorization may be required for certain uses under REACH.

Where to buy 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide in Europe?

3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide is available through OYSI, a specialized European distributor of industrial chemicals. OYSI provides comprehensive regulatory compliance support, proper documentation, and technical expertise for this specialized compound. As a professional chemical distributor, OYSI ensures proper handling, packaging, and delivery while maintaining full regulatory compliance with European chemical legislation including REACH and CLP requirements.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.