Cyanuric acid, Trihydroxycyanidine 108-80-5 Purity≥ 98%

Cyanuric acid, Trihydroxycyanidine

  • CAS: 108-80-5
  • FOB Price:  Get Latest Price
  • Port:As per request of clients
  • Minimum Order Quantity:1/Metric Ton
  • Supply Ability:1000 Metric Ton/Year
  • Payment Terms:L/C,T/T,Western Union,
  • Updatetime:Sep 20 2017
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MOSINTER GROUP LIMITED [Audited]

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Cyanuric acidQuick Details

  • Classification:Other Chemicals
  • Cas NO.:108-80-5
  • EINECS:203-618-0
  • Molecular Formula:C3H3N3O3
  • Melting Point:360℃
  • Boiling Point:74 °C
  • Stability:Stable. Incompatible with strong oxidizing agents.
  • Water Solubility:0.3 g/100mL (25℃)
  • Refractive index:1.748
  • Flash Point:433.6°C
  • Purity:≥ 98%
  • Appearance:White crystal powder
  • usage:used as a chlorine stabilizer in swimming pools
  • Brand Name:MOSINTER
  • Drying loss:≤ 1.0
  • PH value(1%solution:≥ 4.0

Packaging & Delivery

  • Packaging Detail:As per request of clients
  • Delivery Detail:whithin 7 days

Detailed Description

 

Item

Index

Appearance

White crystal powder

Cyanuric   acid assay %

≥ 98

Drying   loss

≤ 1.0

Residue   ignition %

≤ 0.1

PH   value(1%solution) 

≥ 4.0

Ferric   content ppm

≤ 25

Sulphate

≤ 0.5

Cyanuric acid or 1,3,5-triazine-2,4,6-triol is a chemical compound with the formula (CNOH)3. Like many industrially useful chemicals, thistriazine has many synonyms. This white, odorless solid finds use as a precursor or a component of bleaches, disinfectants, and herbicides. In 1997, worldwide production was 160 million kilograms.

Properties and synthesis


Properties

Cyanuric acid is the cyclic trimer of the elusive species cyanic acid, HOCN. The two structures shown in the infobox readily interconvert; that is, they are tautomers. However, mixture with melamine forms Melamine cyanurate, which locks cyanuric acid in the tri-keto tautomer and makes melamine cyanurate insoluble in water. The triol tautomer, which may have aromatic character, predominates in solution. The hydroxyl (-OH) groups assumephenolic character. Deprotonation with base affords a series of cyanurate salts:

[C(O)NH]3 ? [C(O)NH]2[C(O)N]− + H+ (pKa = 6.88)[2][C(O)NH]2[C(O)N]− ? [C(O)NH][C(O)N]22− + H+ (pKa = 11.40)[C(O)NH][C(O)N]22− ? [C(O)N]33− + H+ (pKa = 13.5)

Synthesiss first synthesized by Friedrich Wöhler in 1829 by the thermal decomposition of urea and uric acid. The current industrial route to CYA entails the thermal decomposition of urea, with release of ammonia. The conversion commences at approximately 175 °C:


3 H2N-CO-NH2 → [C(O)NH]3 + 3 NH3

CYA crystallizes from water as the dihydrate.

Cyanuric acid can be produced by hydrolysis of crude or waste melamine followed by crystallization. Acid waste streams from plants producing these materials contain cyanuric acid and on occasion, dissolved amino-substituted triazines, namely, ammeline, ammelide, and melamine. In one method, anammonium sulfate solution is heated to the "boil" and treated with a stoichiometric amount of melamine, by which means the cyanuric acid present precipitates as melamine-cyanuric acid complex. The various waste streams containing cyanuric acid and amino-substituted triazines may be combined for disposal and during upset conditions, undissolved cyanuric acid may be present in the waste streams. 

 

Intermediates and impurities

Intermediates in the dehydration include both isocyanic acid, biuret, and triuret:

H2N-CO-NH2 → HNCO + NH3H2N-CO-NH2 + HNCO → H2N-CO-NH-CO-NH2H2N-CO-NH-CO-NH2 + HNCO → H2N-CO-NH-CO-NH-CO-NH2

One impurity in the production of CYA is ammelide, especially if the reaction temperature exceeds 190 °C: 3 H2N-CO-NH-CO-NH2 → [C(O)]2(CNH2)(NH)2N + 2 NH3 + H2O The first appearance of ammelamide occurs prior to 225 °C and is suspected also to occur from decomposition of biuret but is produced at a slower rate than that of CYA.

Melamine, [C(NH2)N]3, formation occurs between 325 and 350 °C and only in very small quantities.

 

Applications

Cyanuric acid is used as a chlorine stabilizer in swimming pools. It binds to free chlorine and releases it slowly, extending the time needed to deplete each dose of sanitizer.

 

Precursors to chlorinated cyanurates

Cyanuric acid is mainly used as a precursor to N-chlorinated cyanurates, which are used to disinfect water. The dichloro derivative is prepared by direct chlorination:

[C(O)NH]3 + 2 Cl2 + 2 NaOH → [C(O)NCl]2[C(O)NH]

This species is typically converted to its sodium salt, sodium dichloro-s-triazinetrione. Further chlorination gives trichloroisocyanuric acid, [C(O)NCl]3. These N-chloro compounds serve as disinfectants and algicides for swimming pool water.[1] It stabilizes the chlorine in the pool and prevents the chlorine from being quickly consumed by sunlight.

 

Precursors to crosslinking agents

Because of their trifunctionality, CYA is a precursor to crosslinking agents, especially for polyurethane resins.

 

Company Related Products

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Cyanuric Acid

Cyanuric Acid

  • Min. Order: 1 Metric Ton
  • Purity: 98%
  • Packaging Detail: As per request of clients
  •  

    Cyanuric acid ( CAS: 108-80-5 )


    Item

    Index

    Appearance

    White crystalline powder

    Cyan uric acid %≥

    98.5

    Loss on drying %≤

    0.5

    Residue on ignition %≤

    0.1

    PH value of 1% solution≥

    4.0

    Iron content ppm≤

    25

    Sulfate %≤

    0.5

    Cyanuric acid or 1,3,5-triazine-2,4,6-triol is a chemical compound with the formula (CNOH)3. Like many industrially useful chemicals, thistriazine has many synonyms. This white, odorless solid finds use as a precursor or a component of bleaches, disinfectants, and herbicides. In 1997, worldwide production was 160 million kilograms. 

    Properties and synthesis

    Properties

    Cyanuric acid is the cyclic trimer of the elusive species cyanic acid, HOCN. The two structures shown in the infobox readily interconvert; that is, they are tautomers. However, mixture with melamine forms Melamine cyanurate, which locks cyanuric acid in the tri-keto tautomer and makes melamine cyanurate insoluble in water. The triol tautomer, which may have aromatic character, predominates in solution. The hydroxyl (-OH) groups assumephenolic character. Deprotonation with base affords a series of cyanurate salts:

    [C(O)NH]3  [C(O)NH]2[C(O)N]− + H+ (pKa = 6.88)[2][C(O)NH]2[C(O)N]−  [C(O)NH][C(O)N]22− + H+ (pKa = 11.40)[C(O)NH][C(O)N]22−  [C(O)N]33− + H+ (pKa = 13.5)

    Synthesis

    Cyanuric acid (CYA) was first synthesized by Friedrich Wöhler in 1829 by the thermal decomposition of urea and uric acid.[3] The current industrial route to CYA entails the thermal decomposition of urea, with release of ammonia. The conversion commences at approximately 175 °C:

    3 H2N-CO-NH2 → [C(O)NH]3 + 3 NH3

    CYA crystallizes from water as the dihydrate.

    Cyanuric acid can be produced by hydrolysis of crude or waste melamine followed by crystallization. Acid waste streams from plants producing these materials contain cyanuric acid and on occasion, dissolved amino-substituted triazines, namely, ammeline, ammelide, and melamine. In one method, anammonium sulfate solution is heated to the "boil" and treated with a stoichiometric amount of melamine, by which means the cyanuric acid present precipitates as melamine-cyanuric acid complex. The various waste streams containing cyanuric acid and amino-substituted triazines may be combined for disposal and during upset conditions, undissolved cyanuric acid may be present in the waste streams. 

    Intermediates and impurities

    Intermediates in the dehydration include both isocyanic acid, biuret, and triuret:

    H2N-CO-NH2 → HNCO + NH3H2N-CO-NH2 + HNCO → H2N-CO-NH-CO-NH2H2N-CO-NH-CO-NH2 + HNCO → H2N-CO-NH-CO-NH-CO-NH2

    One impurity in the production of CYA is ammelide, especially if the reaction temperature exceeds 190 °C: 3 H2N-CO-NH-CO-NH2 → [C(O)]2(CNH2)(NH)2N + 2 NH3 + H2O The first appearance of ammelamide occurs prior to 225 °C and is suspected also to occur from decomposition of biuret but is produced at a slower rate than that of CYA.

    Melamine, [C(NH2)N]3, formation occurs between 325 and 350 °C and only in very small quantities.

    Applications

    Cyanuric acid is used as a chlorine stabilizer in swimming pools. It binds to free chlorine and releases it slowly, extending the time needed to deplete each dose of sanitizer.

    Precursors to chlorinated cyanurates

    Cyanuric acid is mainly used as a precursor to N-chlorinated cyanurates, which are used to disinfect water. The dichloro derivative is prepared by direct chlorination:

    [C(O)NH]3 + 2 Cl2 + 2 NaOH → [C(O)NCl]2[C(O)NH]

    This species is typically converted to its sodium salt, sodium dichloro-s-triazinetrione. Further chlorination gives trichloroisocyanuric acid, [C(O)NCl]3. These N-chloro compounds serve as disinfectants and algicides for swimming pool water. It stabilizes the chlorine in the pool and prevents the chlorine from being quickly consumed by sunlight.

    Precursors to crosslinking agents

    Because of their trifunctionality, CYA is a precursor to crosslinking agents, especially for polyurethane resins.

    Analysis

    Testing for cyanuric acid concentration is commonly done with a turbidometric test, which uses a reagent, melamine, to precipitate the cyanuric acid. The relative turbidity of the reacted sample quantifies the CYA concentration. Referenced in 1957. This test works because melamine combines with the cyanuric acid in the water to form a fine, insoluble, white precipitate (melamine cyanurate) that causes the water to cloud in proportion to the amount of cyanuric acid in it. More recently, a sensitive method has been developed for analysis of cyanuric acid in urine.


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    Oxalic acid,Ethanedionic acid

    Oxalic acid,Ethanedionic acid

  • Min. Order: 1 Metric Ton
  • Purity: 99.6%min
  • Packaging Detail: According to the request of customer
  •  

    Item

    Index%

    Purity

    99.6%min

    So4

    0.08%max

    Residue of ignition

    0.08%max

    Heavy metal(Pb)

    0.001%max

    Iron

    0.0015%max

    Chloride

    0.003%max

    Calcium

    0.0005%max


    Oxalic acid is an organic compound with the formula H2C2O4. It is a colorless crystalline solid that dissolves in water to give colorless solutions. It is classified as a dicarboxylic acid. In terms of acid strength, it is much stronger than acetic acid. Oxalic acid is a reducing agent and its conjugate base, known as oxalate (C2O42−), is achelating agent for metal cations. Typically, oxalic acid occurs as the dihydrate with the formula H2C2O4·2H2O. Oral consumption of oxalic acid in excess or prolonged skin contact can be dangerous.

    Applications

    About 25% of produced oxalic acid is used as a mordant in dyeing processes. It is used in bleaches, especially for pulpwood. It is also used in baking powder.

    Cleaning

    Oxalic acid's main applications include cleaning or bleaching, especially for the removal of rust (iron complexing agent), e.g. Bar Keepers Friend is an example of a household cleaner containing oxalic acid. Its utility in rust removal agents is due to its forming a stable, water soluble salt with ferric iron,ferrioxalate ion.

    Extractive metallurgy

    Oxalic acid is an important reagent in lanthanide chemistry. Hydrated lanthanide oxalates form readily in strongly acidic solutions in a densely crystalline, easily filtered form, largely free of contamination by nonlanthanide elements. Thermal decomposition of these oxalate gives the oxides, which is the most commonly marketed form of these elements.

    Niche uses

    Vaporized oxalic acid, or a 3.2% solution of oxalic acid in sugar syrup, is used by some beekeepers as a miticide against the parasitic varroa mite.

    Oxalic acid is rubbed onto completed marble sculptures to seal the surface and introduce a shine. Oxalic acid is also used to clean iron and manganese deposits from quartz crystals.

    Detail more >>

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