128-08-5
N-Bromosuccinimide
CAS: 128-08-5
Molecular Formula: C4H4BrNO2
128-08-5 - Names and Identifiers
| Name | N-Bromosuccinimide |
| Synonyms | NBS N-Bromobutanimide N-Bromosuccinimide N-Bromo Succinimide Bromosuccinimide, N- 1-bromopyrrolidine-2,5-dione 1-Bromo-2,5-pyrrolidinedione |
| CAS | 128-08-5 |
| EINECS | 204-877-2 |
| InChI | InChI=1/C4H4BrNO2/c5-6-3(7)1-2-4(6)8/h1-2H2 |
| InChIKey | PCLIMKBDDGJMGD-UHFFFAOYSA-N |
128-08-5 - Physico-chemical Properties
| Molecular Formula | C4H4BrNO2 |
| Molar Mass | 177.984 |
| Density | 2.042g/cm3 |
| Melting Point | 175-178℃ |
| Boling Point | 221.4°C at 760 mmHg |
| Flash Point | 87.7°C |
| 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. |
| Vapor Presure | 0.107mmHg at 25°C |
| Appearance | Form Crystalline Powder, color White to light yellow, Odor characteristic odour of bromine |
| pKa | -2.78±0.20(Predicted) |
| Storage Condition | Store at +2°C to +8°C. |
| Stability | Stable. Incompatible with strong oxidizing agents, halogenated hydrocarbons. |
| Refractive Index | 1.606 |
| Physical and Chemical Properties | The nature of white or milky white fine crystals, slightly bromine odor. Soluble in acetone, ethyl acetate, acetic anhydride, difficult to dissolve in water, benzene, carbon tetrachloride, chloroform, etc. Specific gravity 2.097, melting point 173-175 ℃, decomposition at 182 ℃. The minimum content of active bromine was 44.5%. Slightly decomposed at 173.5 °c. Soluble in carbon tetrachloride. |
| Use | Can be used for the synthesis of bromoacetonitrile drugs, pesticide industry for the synthesis of thiabendazole, can be used as fruit preservative and antiseptic, fungicide, etc |
128-08-5 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | UN 3261 8/PG 2 |
| TSCA | Yes |
| HS Code | 29251995 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
128-08-5 - Upstream Downstream Industry
128-08-5 - Preparation Method
Open Data Verified Data
ammonium succinate is synthesized from succinic acid and ammonia, and then heated and dehydrated to form succinimide, which is then brominated and refined to obtain a finished product.
Last Update：2022-01-01 10:36:14
128-08-5 - Application
Open Data Verified Data
organic chemical raw materials. For the regulation of low energy bromination reaction, can also be used for the preparation of rubber additives and pharmaceuticals.
Last Update：2025-08-19 16:24:40
128-08-5 - Safety
Open Data Verified Data
This product is highly toxic. It has strong irritation to eyes, mucous membranes and skin. The workshop should be well ventilated. Production equipment should be sealed to prevent leakage, and operators should wear protective equipment.
Reagent grade products are packaged in glass bottles, lOg per bottle, and reinforced with wooden frames. Store in a cool, dry place. Transport according to the regulations of toxic chemicals.
Last Update：2025-06-10 22:55:16
128-08-5 - Nature
| storage conditions | Store at 2°C to 8°C. |
| solubility | 14.8g/l (decomposition) |
| acidity coefficient (pKa) | -2.78±0.20(Predicted) |
| morphology | Crystalline Powder |
| color | White to light yellow |
| Odor | characteristic odour of bromine |
| 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. |
| sensitivity | Moisture Sensitive |
| Merck | 14,1438 |
| BRN | 113916 |
| stability | Stable. Incompatible with strong oxidizing agents, halogenated hydrocarbons. |
| InChIKey | PCLIMKBDDGJMGD-UHFFFAOYSA-N |
| NIST chemical information | 2,5-Pyrrolidinedione, 1-bromo-(128-08-5) |
| EPA chemical information | N-Bromosuccinimide (128-08-5) |
Last Update：2024-04-10 22:29:15
128-08-5 - Security information
| WGK Germany | 3 |
| Hazard Note | Harmful |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| customs code | 29251995 |
| toxic substance data | 128-08-5(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Last Update：2024-04-10 22:29:15
128-08-5 - Uses and synthesis methods
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | abdominal cavity-mouse LDL0: 256 mg/kg |
| explosive hazard characteristics | reacts and explodes with aniline, dialkyl sulfur and hydrazine hydrate; Reacts and explodes with propionitrile when heated at 105 ℃ for 24 hours |
| flammability hazard characteristics | It is irritating to human eyes, skin and mucous membranes; thermal decomposition discharges toxic nitrogen oxides and bromide smoke |
| storage and transportation characteristics | Warehouse ventilation and low temperature drying; separate storage with aniline; dialkyl sulfur; hydrazine hydrate, peroxide, propionitrile |
| fire extinguishing agent | Foam, dry powder, carbon dioxide, mist water |
Last Update：2024-04-10 22:29:15
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View History
128-08-5
14409-72-4
4-Butanoylphenol
2854-16-2
Octenidine HCl
Crystal ammonia
1-NAPHTHOHYDRAZIDE
2-CHLORONICOTINAMIDE
DIMETHYL METHYLDOPA HYDROCHLORIDE
14409-72-4
4-Butanoylphenol
2854-16-2
Octenidine HCl
Crystal ammonia
1-NAPHTHOHYDRAZIDE
2-CHLORONICOTINAMIDE
DIMETHYL METHYLDOPA HYDROCHLORIDE
Raw Materials for 128-08-5
Downstream Products for 128-08-5
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
IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID
4-Pyrazolecarboxylic acid
METHYL ALPHA-BROMOPHENYLACETATE
5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine
2,1,3-BENZOTHIADIAZOL-4-YLMETHANOL
IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID