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Home > Encyclopedia > 2-Amino-4-chlorobenzothiazole

2-Amino-4-chlorobenzothiazole

2-Amino-4-chlorobenzothiazole structure

2-Amino-4-chlorobenzothiazole 

structure
  • CAS No:

    19952-47-7

  • Formula:

    C7H5ClN2S

  • Chemical Name:

    2-Amino-4-chlorobenzothiazole

  • Synonyms:

    2-Benzothiazolamine,4-chloro-;Benzothiazole,2-amino-4-chloro-;4-Chloro-2-benzothiazolamine;2-Amino-4-chlorobenzothiazole;4-Chloro-1,3-benzothiazol-2-ylamine;(4-Chlorobenzothiazol-2-yl)amine;4-Chloro-1,3-benzothiazol-2-amine;2-Amino-4-chloro-1,3-benzothiazole;4-Chlorobenzo[d]thiazol-2-amine

  • Categories:

    Agrochemicals  >  Pesticide Intermediates

Description

PHYSICAL DESCRIPTION: Cream colored crystalline solid. (NTP, 1992)


2-amino-4-chlorobenzothiazole is a cream colored crystalline solid. (NTP, 1992)


2-amino-4-chlorobenzothiazole is a cream colored crystalline solid. (NTP, 1992)

2-Amino-4-chlorobenzothiazole Basic Attributes

184.65

184.65

136784

243-439-5

DTXSID0024470

29342080

Characteristics

67.2

2.7

White to light beige or grayish Crystalline Powder

1.5±0.1 g/cm3

203 °C

344.3ºC at 760mmHg

162.0±25.7 °C

1.763

>27.7 [ug/mL]

6.65E-05mmHg at 25°C

Oral-mouse LD50: 2400 mg/kg; intravenous-mouse LD50: 71 mg/kg

Flammable; burning produces toxic nitrogen oxides, sulfur oxides and chloride fumes

Insoluble in water.

Amines, Phosphines, and Pyridines

A halide- and amine-substituted aromatic compound and organosulfide. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

Safety Information

NONH for all modes of transport

2

36/37/38-20/21/22

26-37/39-36

DL1225000

Xi,Xn

Warehouse ventilated, low temperature and dry

P261-P305 + P351 + P338

H315-H319-H335

Flash point data for this chemical are not available; however, it is probably combustible. (NTP, 1992)

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)

SMALL SPILLS AND LEAKAGE: If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned. STORAGE PRECAUTIONS: You should store this material under ambient temperatures. (NTP, 1992)

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

Toxicity

moderately toxic

Drug Information

ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits very toxic fumes of chloride ion, SOx and NOx. (NTP, 1992)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment. INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing. INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)

2-Amino-4-chlorobenzothiazole Use and Manufacturing

Methods of Manufacturing

The preparation method is to add o-chlorophenyl thiourea, dichloroethane and glacial acetic acid into the reaction kettle, cool to below 10°C, add bromine dropwise, the temperature is not higher than 20°C, and stir for 0.5h after the dropwise addition. Heating and refluxing for 4 hours, the reaction is over, cooling, filtering, the filtrate is washed, dehydrated, and dichloroethane is recovered by distillation to obtain the product.

Uses

2-Amino-4-chlorobenzothiazole is an intermediate of the herbicide herbicide.

2-Benzothiazolamine, 4-chloro-: ACTIVE

Computed Properties

Molecular Weight:184.65
XLogP3:2.7
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Exact Mass:183.9861970
Monoisotopic Mass:183.9861970
Topological Polar Surface Area:67.2
Heavy Atom Count:11
Complexity:155
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

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