Product Name: DBDCB

Synonyms: methyldibromoglutaronitrile;tektamer38;dbdcb;2-bromo-(2-bromomethyl)glutaronitrile;2-Bromo-2-(bromomethyl)pentanedinitrile;1,2-DIBROMO-2,4-DICYANOBUTANE;2-bromo-2-(bromomethyl)-glutaronitril;2-bromo-2-(bromomethyl)-pentanedinitril

CAS: 35691-65-7

MF: C6H6Br2N2

MW: 265.93

EINECS: 252-681-0

Product Categories: -;Industrial/Fine Chemicals;FUNGICIDE;Building Blocks;C6 to C7;Chemical Synthesis;Cyanides/Nitriles;Nitrogen Compounds;Organic Building Blocks

Mol File: 35691-65-7.mol

DBDCB Structure

DBDCB Chemical Properties

Melting point 48-50°C

Boiling point 338.6±42.0 °C(Predicted)

density 1.9436 (rough estimate)

refractive index 1.6300 (estimate)

storage temp. 2-8°C

form neat

Merck 14,3021

BRN 1930600

CAS DataBase Reference 35691-65-7(CAS DataBase Reference)

EPA Substance Registry System 1-Bromo-1-(bromomethyl)-1,3-propanedicarbonitrile (35691-65-7)

Safety Information

Hazard Codes Xn

Risk Statements 20/22-37/38-41-34-22

Safety Statements 26-36/37/39-45

RIDADR 3439

WGK Germany 2

RTECS MA5599000

HazardClass 9

PackingGroup III

HS Code 29269090

Hazardous Substances Data 35691-65-7(Hazardous Substances Data)

MSDS Information

Provider Language

DBDCB English

ALFA English

DBDCB Usage And Synthesis

Chemical Properties White crystal

Chemical Properties Light yellow crystalline solid or powder. Commercial products may be soluble concentrate (liquid or solid); pellets/tablets. Mild, acrid, sweet odor.

Definition ChEBI: An organobromine compound that consists of pentanedinitrile bearing bromo and bromomethyl substituents at position 2.

General Description Crystals with a pungent odor. Insoluble in water. Used as a preservative in latex paint, adhesives, etc.

Air & Water Reactions Insoluble in water.

Reactivity Profile DBDCB may polymerize in the presence of metals and some metal compounds. Incompatible with acids; mixing nitriles with strong oxidizing acids can lead to extremely violent reactions. Nitriles are generally incompatible with other oxidizing agents such as peroxides and epoxides. The combination of bases and nitriles can produce hydrogen cyanide. Nitriles are hydrolyzed in both aqueous acid and base to give carboxylic acids (or salts of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents.

Agricultural Uses Microbiocide: Tolerances have been established by the U.S. Food and Drug Administration when this substances is used as a preservative in food-grade adhesives and as a slimicide in the manufacture of food-grade paper and paperboard. Used to control slime-forming bacteria and fungi in recirculating water cooling system; oil-recovery drilling mud systems; paper mill and pulp mill water systems and similar industrial processing and chemical systems.

Trade name BIOCHEK®; BIOCLEAR®; MERCK® 48051; METACIDE® 38; METASOL; TEKTAMER

Contact allergens Methyldibromoglutaronitrile is a biocide widely used as a preservative agent in cosmetics, toiletries, and metalworking fluids. It is a potent allerg

Safety Profile Experimental reproductive effects. When heated to decomposition it emits toxic fumes of NO, and Br-.

Potential Exposure Nitrile microbiocide used as a preser- vative in food grade adhesives and as a slimicide in the manufacture of food grade paper and paperboard; used to control slime-forming bacteria and fungi in recirculating water cooling system; oil recovery drilling mud systems; paper mill and pulp mill water systems and similar indus- trial processing and chemical systems.

Shipping UN3261 Corrosive solid, acidic, organic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required. UN3439 Nitriles, solid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

Incompatibilities Corrosive. Strong oxidizers and reducing agents, strong acids and bases. Reacts with acids, steam, warm water producing toxic and flammable hydrogen cya- nide fumes. Hydrogen cyanide is produced when propioni- trile is heated to decomposition. Nitriles may polymerize in the presence of metals and some metal compounds. They are incompatible with acids; mixing nitriles with strong oxidizing acids can lead to extremely violent reactions. Nitriles are generally incompatible with other oxidizing agents such as peroxides and epoxides. The combination of bases and nitriles can produce hydrogen cyanide. Nitriles are hydrolyzed in both aqueous acid and base to give car- boxylic acids (or salts of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents. Acetonitrile and propionitrile are soluble in water, but nitriles higher than propionitrile have low aqueous solubility. They are also insoluble in aqueous acids .

Waste Disposal Recycle any unused portion of the material for its approved use or return it to the manu- facturer or supplier. Ultimate disposal of the chemical must consider: the material’s impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations .

DBDCB Preparation Products And Raw materials

Raw materials Bromine-->Acrylonitrile-->DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4-->2-Methyleneglutaronitrile