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1,3-Dibromo-5,5-dimethylhydantoin CAS NO.77-48-5

Min.Order Quantity:
1 Kilogram
Purity:
98%
Port:
China Main Ports
Payment Terms:
L/C,D/A,D/P,T/T,MoneyGram,Other

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Product Details

Keywords

  • 1,3-Dibromo-5,5-dimethylhydantoin
  • 77-48-5
  • manufacturer , better price with good quality

Quick Details

  • ProName: 1,3-Dibromo-5,5-dimethylhydantoin
  • CasNo: 77-48-5
  • Molecular Formula: C5H6Br2N2O2
  • Appearance: white or light yellow crystalline powd...
  • Application: Organic Chemistry
  • DeliveryTime: Within 7 days
  • PackAge: Depended
  • Port: China Main Ports
  • ProductionCapacity: 300 Kilogram/Month
  • Purity: 98%
  • Storage: KEEP COLD
  • Transportation: BY SEA OR AIR
  • LimitNum: 1 Kilogram
  • Grade: Industrial Grade,Electron Grade

Superiority


preview
cbnumber: cb8772842
chemical name: 1,3-dibromo-5,5-dimethylhydantoin
molecular formula: c5h6br2n2o2
formula weight: 285.92
cas no.: 77-48-5
1,3-dibromo-5,5-dimethylhydantoin basic information
industrial brominating agent and disinfectant physical and chemical properties sterilization mechanism synthesis of 1,3-dibromo-5,5-dimethylhydantoin applications chemical properties production method category toxicity grading acute toxicity flammability and hazard characteristics storage properties extinguishing media
product name: 1,3-dibromo-5,5-dimethylhydantoin
synonyms: dibromantine;n,n’-dibromodimethylhydantoin;1,3-dibromo-5,5-dimethyl-2,4-imidazolidinedione;1,3-dibromo-5,5-dimethylhydantoin;dibromo-5,5-dimethylhydantoin;dibromo dimethyl hydantoin;dibromantin;dibromatin
cas: 77-48-5
mf: c5h6br2n2o2
mw: 285.92
einecs: 201-030-9
product categories: nitrogen cyclic compounds;miscellaneous;bromination;halogenation;synthetic organic chemistry;water treatment chemicals;non-chiral heterocyclic compounds;water treatment
mol file: 77-48-5.mol
1,3-dibromo-5,5-dimethylhydantoin structure
1,3-dibromo-5,5-dimethylhydantoin chemical properties
mp 197-199 °c (dec.)(lit.)
fp 155 °c
storage temp. 0-6°c
decomposition 197-199 ºc
sensitive moisture sensitive
merck 3017
brn 146024
cas database reference 77-48-5(cas database reference)
epa substance registry system 2,4-imidazolidinedione, 1,3-dibromo-5,5-dimethyl-(77-48-5)
safety information
hazard codes o,c,n,xi
risk statements 8-22-35-50/53-50-34
safety statements 17-26-36/37/39-45-60-61
ridadr un 3087 5.1/pg 2
wgk germany 3
rtecs mu0686000
hazard note harmful/irritant
hazardclass 5.1
packinggroup ii
hs code 29332100
msds information
provider language
1,3-dibromo-5,5-dimethyl-2,4-imidazolidinedione english
acros english
sigmaaldrich english
alfa english
1,3-dibromo-5,5-dimethylhydantoin usage and synthesis
industrial brominating agent and disinfectant 1, 3-dibromo-5, 5-dimethylhydantoin is primarily used as an industrial brominating agent and antiseptic disinfectant. it is a very useful kind of brominating agent. compared with brominating agent such as n-bromoacetamide, n-bromosuccinimide, etc. it has a lot of advantages including high content of active bromine, excellent storage stability, and economic application. therefore, it is widely applied to chemical and pharmaceutical industry such as being used for the bromination of allyl and benzyl compounds as well as aromatic ring, the addition reaction of the bromine in double bond and hydrogen bromide as well as the selective oxidation of secondary alcohols; in addition, it is also a kind of efficient and safe disinfectant with a strong efficacy in killing fungi, bacteria and viruses as well as in killing the adverse algae in the water. it can be applied to the prevention and treatment of many kinds of diseases in aquaculture related to fish, shrimp, frogs and turtles as well as the disinfection of swimming pool, fruit preservation and algae killing via industrial recycled water algae and daily disinfection. for example, the experts in the beijing sars prevention and control working panel had proposed for using the 1, 3-dibromo-5, 5-dimethylhydantoin solution with effective bromine being 500 ~ 1000mg / l for spray, mopping and cleaning, having the disinfection for 10 ~ 15min to prevent sars.
physical and chemical properties 1, 3-dibromo-5, 5-dimethylhydantoin has the english abbreviation be dbdmh with pure product being white solid and the mp being 196 ~ 198 ℃. the industrial products appear as a pale yellow solid with a mp of 194 ~ 197 ℃; it is soluble in chloroform, ethanol, acetone and other organic solvents, slightly soluble in water with 1 l water being able to dissolve 2.2 g of dbdmh at 20℃ with the ph of 0.1% aqueous solution being 2.6; it is prone to be subject to decomposition in strong acid or alkali; it is stable when dry and is easy to absorb moisture with partially hydrolysis after moisture absorption; it has a slight pungent odor with the active bromine content being 54% to 55%.
sterilization mechanism dbdmh, upon hydrolysis in water, can mainly form hypobromous acid and can release bromine in the form of hypobromous acid. dbdmh, due to able to release bromine in a high reaction rate, can continuously release br- ions in the water, further playing a bactericidal effect. however, other kinds of halogenated hydantoin, such as 1, 3-dibromo-5, 5-dimethylhydantoin or bromochlorohydantoin, release the chlorine in a very slow rate, leading to that the time for reaching the peak of sterilization in the water is lagging behind, therefore, dbdmh usually has a higher efficiency than other kind of halogenated hydantoin at relatively rapid bactericidal conditions.
synthesis of 1,3-dibromo-5,5-dimethylhydantoin adding an appropriate amount of water to dimethyl hydantoin, control the temperature at about 30 ℃ for stirring of 30min until all the dimethyl hydantoin is dissolved. add drop wise of appropriate amount of bromine within a certain period of time and then have reaction for several hours. after the completion of the reaction, cool the solution, crystallize using ethanol, filter, and dry with the light-yellow solid being finished product of dbdmh.

the optimal condition for experimentally determination and synthesis of dbdmh is: the optimum molar ratio of dmh to bromine is 1: 2.0; the solvent amount is 80 ml (water) /0.1mol (hein); the reaction temperature should be about 30 ℃; reaction time is around 5min with the yield of 1,3- dibromo-5,5-dimethylhydantoin being up to 80%.
applications dbdmh is an important chemical product and has been widely applied in chemical, pharmaceutical and agricultural industries with various kinds of advantages including excellent stability, high content of bromine and high reactive activity. currently, the combined formulation between dbdmh and other halogenated hydantoin for application has become a hotspot in recent years such as the combined application of bcdmh and dbdmh as well as the combined application of dcdmh and dbdmh. for the combined formulation of dbdmh and other halogenated hydantoin, one critical factor is the ratio between effective chlorine and effective bromine. for example, at ph 7.1, compound formulation with the same dose of bcdmh and dbdmh has a significantly higher bactericidal efficacy than dbdmh alone or bcdmh alone. many domestic and foreign experts believe that the most significant oxidizing biocide is the compound halogenated compound formulation combining bcdmh and dbdmh. in agriculture, dbdmh is mainly used for aquaculture including pond disinfection, prevention of water disinfection, disease treatment, etc., and is not affected by water quality, salinity, ph, temperature, and other organic compounds during usage. in addition, there has been already cases in which people has applied dbdmh as high-efficiency and low-toxicity disinfectant for combined formulation with stearic acid monoglyceride and tween-80 and applied to the surface of the orange for preventing mold and preservation, and has already achieved excellent results. we can expect that this preservative can also be used for storage and preservation of other fruits and vegetables. therefore, with the continuous development of chemical and pharmaceutical industry and increasing people's living standards, it is expected that the application range and demand of dbdmh will increase greatly.
chemical properties it appears as white or light yellow crystalline powder.
production method it is obtained through the bromination of 5, 5-dimethyl hydantoin. mix the 5, 5-dimethyl hydantoin, sodium carbonate, sodium hydroxide and water together, add bromine slowly under cooling. after the addition, it was poured into water with the crystal filtered out after standing being the crude product. the crude product was further dissolved in acetone for decolorizing and filtrating. the filtrate was poured into water to give white crystalline which is the finished product.
category pesticide
toxicity grading highly toxic
acute toxicity oral- rat ld50: 250 mg / kg.
flammability and hazard characteristics it is flammable with burning discharging spicy smoke of bromide and nitrogen oxides.
storage properties warehouse: cold, ventilated and dry; store it separately from food raw materials.
extinguishing media water, carbon dioxide, dry, sandy soil.
chemical properties solid
1,3-dibromo-5,5-dimethylhydantoin preparation products and raw materials
raw materials hydrochloric acid-->sodium hypochlorite-->5,5-dimethylhydantoin
preparation products 1-fluoro-4-(trifluoromethylthio)benzene-->5-bromo-2-(dimethylamino)pyrimidine

Details

henan sunlake enterprise corporation is located in henan province, the central plain of china , which enjoys favorable geogeaphical position and convenient transportion. the comany was established in june 1998 , until now having more than 18 years experience in manufacturing & exporting chemical raw material .
sunlake is a professional manufacturer engaged in producing and selling chemicals,including organic & inorganic chemicals , pigments & dyestuffs , water treatment chemicals , food & feed additives and others . these products have been being well exported to europe , southeast asia , the middle east , africa , south america and some other countries and areas.
we sincerely welcome foreign friends to visit our plant for cooperation. with the idea of "quality first,credit priority, excellent service", we are highly acknowledged by customers for good quality and competitive price. more importantly , the company has a strong r & d team who are professional engineers and scholars with ph. d. .so we are confident to serve you better with our high - quality products and professional team.
we are taking great efforts to provide our customers with demanded goods and professional services, continuously improve our core ability of competition and get the momentum for sustainable development ,which finally makes us being a reliable and professional supplier in international market.
we welcome any inquiries from all customers of the world, and sincerely hope to cooperate with you for a brilliant future!
our advantages:
i). we have abundant professional production experience.
ii). we have our own chemical factory.
iii). sample is free of charge.
iv). reasonable price, excellent quality & attentive service
v). prompt reply: we can reply your inquiry and email within 24 hours.
vi). fast delivery: the delivery time is about 10-20 days after receiving the deposit.
vii). we have passed the lfgb, sgs, stc, hsl and some other tests.
viii). we have a unity cooperation team.
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