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N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

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N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

China N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti supplier
N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti supplier N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti supplier

Large Image :  N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

Product Details:

Place of Origin: Weifang,China
Brand Name: RuzE
Model Number: TC-2028

Payment & Shipping Terms:

Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 25kg fibre can
Delivery Time: 5-10work days
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 100MT/Month
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Detailed Product Description
Product Name: N-Bromosuccinimide Synonyms: 2,5-PYRROLIDINEDIONE, 1-BROMO-
CAS: 128-08-5 MF: C4H4BrNO2
MW: 177.98 EINECS: 204-877-2
Product Categories: Medical Intermediates Usage: Used In Organic Chemistry In Electrophilic Addition Reactions And Radical Substitution

N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

 

N-Bromosuccinimide(CAS.No.:128-08-5)

 

[Product Name]:N-Bromosuccinimide,NBS

[CAS.No].:128-08-5

[Molecular formula]:C4H4BrNO2

[Structural formula]:

1.Properties and usage

The product is white or milk white fine crystal, with slight bromine odor; soluble in acetone, ethyl acetate and acetic oxide; hardly soluble in water, benzene, carbon tetrachloride, chloroform, etc.; specific gravity: 2.097; melting point: 173-175°C; decomposing under 182°C.

2.Specification

[Appearance]: White to almost white crystalline powder

[Content]: ≥99.0%

[Loss on drying]: ≤0.8%

[Melting point]: 173~183℃

[Available Brmine Content]:≤44.47%


N-Bromosuccinimide Chemical Properties


Melting point 175-180 °C (dec.)(lit.)
Boiling point 221.4°C (rough estimate)
density 2.098
vapor pressure 14.8 hPa (20 °C)
refractive index 1.6060 (estimate)
storage temp. 0-6°C
solubility 14.8g/l (decomposition)
form Crystalline Powder
color White to light yellow
Water Solubility Soluble in acetone, tetrahydrofuran, dimethyl formamide, dimethyl sulfoxide and acetonitrile. Slightly soluble in water and acetic acid. Insoluble in ether, hexane and carbon tetrachloride.
Sensitive Moisture Sensitive
Merck 14,1438
BRN 113916
Stability: Stable. Incompatible with strong oxidizing agents, halogenated hydrocarbons.
InChIKey PCLIMKBDDGJMGD-UHFFFAOYSA-N
CAS DataBase Reference 128-08-5(CAS DataBase Reference)
NIST Chemistry Reference 2,5-Pyrrolidinedione, 1-bromo-(128-08-5)
EPA Substance Registry System 2,5-Pyrrolidinedione, 1-bromo-(128-08-5)

Safety Information


Hazard Codes C,Xn
Risk Statements 22-34-36/37/38
Safety Statements 26-36/37/39-45-37/39
RIDADR UN 3261 8/PG 2
WGK Germany 3
Hazard Note Harmful
TSCA Yes
HazardClass 8
PackingGroup III
HS Code 29251995
Toxicity LD50 orally in Rabbit: > 2000 mg/kg


N-Bromosuccinimide Usage And Synthesis


Chemical Properties white to light yellow crystalline powder
Uses N-Bromosuccinimide is a brominated succinimide used as a chemical reagent in radical substitution and electrophilic addition reactions in organic synthesis.
Uses NBS, is a chemical reagent used in organic chemistry in electrophilic addition reactions and radical substitution
Uses In bromination of olefins; in oxidation of alcohols to aldehydes and ketones and of aldehydes to acid bromides.
Definition ChEBI: A five-membered cyclic dicarboximide compound having a bromo substituent on the nitrogen atom.
Safety Profile Poison by intraperitoneal route. An irritating poison to skin, eyes, and mucous membranes. Reacts explosively with adme, dtallyl sulfide, and hydrazine hydrate. Explosive reaction with propiononitrile after heating to 105℃ for 24 hours. Violent reaction with dtbenzoyl peroxide + 4-tok acid. When heated to decomposition it emits toxic fumes of Brand NOx. See also BROMIDES and NITROGEN MONOXIDE.
Purification Methods N-Bromosuccinimide (30g) is purified by dissolving rapidly in 300mL of boiling water and filtering through a fluted filter paper into a flask immersed in an ice bath, and left for 2hours. The crystals are filtered off, washed thoroughly with ca 100mL of ice-cold water and drained on a Büchner funnel before drying under vacuun over P2O5 or CaCl2 [Dauben & McCoy J Am Chem Soc 81 4863 1959]. This brominating agent has also been crystallised from acetic acid or water (10 parts), washed in water and dried in vacuo [Wilcox et al. J Am Chem Soc 108 7693 1986, Shell et al. J Am Chem Soc 108 121 1986, Phillips & Cohen J Am Chem Soc 108 2013 1986, Beilstein 21/9 V 543.]

N-Bromosuccinimide Preparation Products And Raw materials


Preparation Products alpha,alpha'-Dibromo-p-xylene-->4-PYRAZOLECARBOXYLIC ACID-->METHYL ALPHA-BROMOPHENYLACETATE-->5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine-->2,1,3-BENZOTHIADIAZOL-4-YLMETHANOL,97%-->5-Bromo-4-chloro-2-(methylthio)-7H-pyrrolo[2,3-D]pyrimidine ,97%-->IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID-->METHYL 3-((PYRROLIDIN-1-YL)METHYL)BENZOATE-->5-BROMO-2-(PIPERIDIN-1-YL)PYRIMIDINE-->Methyl 3-(morpholinomethyl)benzoate ,98%-->5-BROMO-6-HYDROXY-1H-PYRIMIDINE-2,4-DIONE-->Ethyl 4-bromocrotonate-->5-BROMO-2-CHLORO-4,6-DIMETHYLNICOTINONITRILE-->5-BROMO-4,6-DIMETHOXYPYRIMIDINE-->4-BROMO-5-METHYL-1H-PYRAZOLE-3-CARBOXYLIC ACID-->2,5-DICHLOROTHIOPHENE-3-CARBOXYLIC ACID-->3-BROMO-5-(TRIFLUOROMETHYL)BENZENESULFONYL CHLORIDE-->4-Bromo-2-methoxyphenol-->5-Bromo-2-oxindole-->2-Hydroxy-5-bromopyridine-->3-Nitrobenzyl bromide-->8-BROMO-4-CHLORO-2-METHYLTHIOPYRAZOLO[1,5-A]1,3,5-TRIAZINE-->BISPYRAZOLONE-->METHYL 4-(BROMOMETHYL)-3-METHOXYBENZOATE-->2,6-Dibromopyridin-3-amine-->IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID ETHYL ESTER-->2-Amino-5-bromopyrazine-->4-CHLORO-3-((CYCLOPROPYLAMINO)METHYL)BENZALDEHYDE-->4-AMINO-N,N-DIMETHYLBENZYLAMINE-->3-(BROMOMETHYL)BENZOIC ACID-->6-BROMOMETHYL-2-PYRIDINECARBOXYLIC ACID-->Methyl 2-bromomethylbenzoate-->DIETHYL 2-(ACETAMIDO)-2-(2-(BROMOMETHYL)-5-NITROBENZYL)MALONATE-->2-(Bromomethyl)pyridine hydrobromide-->5-BROMO-2-(MORPHOLIN-4-YL)PYRIMIDINE-->2-NAPHTHALEN-1-YL-ETHYLAMINE-->Bromoacetonitrile-->3-BROMO-1-(TRIISOPROPYLSILYL)INDOLE-->1-(BROMOMETHYL)-4-(METHYLSULFONYL)BENZENE-->Raltitrexed
Raw materials Succinic acid-->Succinimide

 

N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substitutiN-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substitutiN-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substitutiN-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

 

N-Bromosuccinimide NBS CAS:128-08-5 used in organic chemistry in electrophilic addition reactions and radical substituti

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