N-Bromosuccinimide C4H4BrNO2 Professional Chemical Reagent China Manufacturers

SPECIFICATION   PROPERTIES

STANDARD

RESULTS

content

>98%

99%

water

<0.05%

0.003%

Appearance

White crystalline powder

White crystalline powder

Ash (%)

<0.1%

0.01

Loss on drying(%)

<0.5%

0.1

Item

Value

Product name

N-Bromosuccinimide

CAS

128-08-5

Other name

NBS

Appearance

White powder

Purity

99%min

MF

C4H4BrNO2

Usage

Chemical additives

Place of origin

China

Sample

Yes

Shelf life

2years

Melting point

175-180 °C (dec.)(lit.)

Boiling point

221.4°C (rough estimate)

D ensity

2.098

V apor pressure

14.8 hPa (20 °C)

R efractive index

1.6060 (estimate)

S torage temp.

Store at +2°C to +8°C.

S olubility

14.8g/l (decomposition)

P ka

-2.78±0.20(Predicted)

F orm

Crystalline Powder

Identification reagent

Used as an identification reagent for primary, secondary and tertiary alcohols.

Organic synthetic raw material

It is widely used in the negative ion bromine reaction and free radical bromine reaction of olefins, alkynes and other compounds. It is used to regulate low-energy bromination reactions, in the commercial production of rubber auxiliaries and pharmaceutical products such as cortisone and vitamin D3, and in the synthesis of thiamidam in the pesticide industry.

preservative

Used as fruit preservative and anti-corrosion, anti-mildew agent, etc.

Important brominating agent

It can be used for allyl bromination (Wohl-Ziegler reaction) as a selective brominator for alkenes and alkyl aromatics. In the pharmaceutical industry, it is often used as a brominating agent in antibiotic synthesis, such as the synthesis of benzyl cephalosporin (Cefaloram).

Important oxidant

In organic synthesis, ethanol is oxidized into aldehydes and ketones, and aldehydes are oxidized into brominated acids. In the presence of AIBN, silicyl ether can be oxidized to aldehyde. It is used for the oxidation of tryptophan, but the degree of oxidation of tyrosine, histidine and methionine residues may be low.

Tryptophan modification agent

It can also be used for the modification of ribosome sulfhydryl groups.

Universal bromination reagent

For the oxidation of tryptophan, although tyrosine, histidine, methionine oxidation residues may be present to a lesser extent; Group modification of ribosome sulfhydryl groups.

Ascorbic acid determination

It is used to determine ascorbic acid in pharmaceutical preparations, biological fluids and vegetables and fruits.