110-21-4 Usage
Description
BIUREA, also known as Hydrazine-1,2-dicarboxamide, is a white powder with chemical properties. It is a useful compound in the process of producing protected anode active material particles for rechargeable lithium batteries.
Uses
Used in Battery Industry:
BIUREA is used as a compound in the production of protected anode active material particles for rechargeable lithium batteries. It plays a crucial role in enhancing the performance and efficiency of these batteries.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
BIUREA is chemically classified as an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).
Fire Hazard
The flash point of BIUREA is not available, however BIUREA is probably non-flammable.
Purification Methods
Crystallise the diamide from water, wash the crystals with EtOH then Et2O and dry in vacuum over P2O5. It does not decompose on drying at 110o /48hours. Its solubility in H2O is 1% at 0o. [Andrieth & Mohr Inorg Synth IV 26 1953, Beilstein 3 H 116, 3 I 56, 3 III 229.]
Check Digit Verification of cas no
The CAS Registry Mumber 110-21-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,1 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 110-21:
(5*1)+(4*1)+(3*0)+(2*2)+(1*1)=14
14 % 10 = 4
So 110-21-4 is a valid CAS Registry Number.
InChI:InChI=1/C2H6N4O2/c3-1(7)6(5)2(4)8/h5H2,(H2,3,7)(H2,4,8)
110-21-4Relevant articles and documents
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Glemser,Luedemann
, p. 168 (1956)
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Audrieth,Mohr
, p. 26,27 (1953)
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Atkinson,Polya
, p. 3319,3322 (1954)
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Neuberg,Kobel
, (1928)
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Marshalkin,Yakhontov
, (1978)
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Method and apparatus for preparing hydrazo-dicarbonamide using urea as starting material
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Page 8, (2008/06/13)
The present invention relates to a method and apparatus for preparing hydrazodicarbonamide using urea as starting material economically and environmentally desirably. The apparatus includes a pyrolysis furnace to obtain biuret and ammonia by pyrolyzing urea; a recrystallization reactor to purify the biuret obtained from the pyrolysis furnace; a first reactor to obtain an metal monohalobiuret salt by reacting the biuret with metal hypohalogen compound or with halogen and base; a second reactor to synthesize the hydrazodicarbonamide by reacting the monohalobiuret metal salt with ammonia; and an ammonia evaporator to separate the excess ammonia from hydrazodicarbonamide and to supply the separated ammonia to an ammonia concentrator.