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Home> Hot Product Listed C   > Cyanuric acid

Cyanuric acid

CAS No.:108-80-5
Molecular Weight:129.07
Molecular Formula:C3H3N3O3 (Products with the same molecular formula)
MOL File:108-80-5.mol
Names and Identifiers

Cyanuric acid 1,3,5-triazine-2,4,6-triol1,3,5-Triazin-2,4,6-triol 1,3,5-triazine-2,4,6(1H,3H,5H)-trione 1,3,5-Triazinan-2,4,6-trion 1,3,5-Triazinane-2,4,6-trione isocyanuric acid

Canonical Smiles
white crystalline granular or powder
Melting Point
Boiling Point
74 °C
0mmHg at 25°C
Refractive Index
Flash Point
0.3 g/100mL (25℃)
White crystalline solid
Stable. Incompatible with strong oxidizing agents.
HS Code
Storage temp
Spectral properties
UV max (0.1M HCl); 214 nm (log epsilon 3.38); UV max (0.1M phosphate buffer pH 7): 214 nm (log epsilon 4.00); UV max (0.1M NaOH); 213 nm (log epsilon 4.64)
Safety and Handling
Hazard Codes
Risk Statements
Safety Statements
Hazard Codes:Xi
Risk Statements:36-36/37/38
36:Irritating to the eyes
36/37/38:Irritating to eyes, respiratory system and skin
Safety Statements:26-37/39
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37/39:Wear suitable protective clothing, gloves and eye/face protection
RIDADR:UN 3389 6.1/PG 1
WGK Germany:3
HS Code:29336980
Hazardous Substances Data:108-80-5(Hazardous Substances Data)
Skin, Eye, and Respiratory Irritations
The substance irritates the respiratory tract and the eyes.
Cleanup Methods
Alkali and thermal treatment in filtration and precipitation was used to remove cyanuric acid from wastewaters.
Dissolved cyanurate salts are removed from water by treatment with an aq soln of sodium hypochlorite, whereby most of the cyanurate is converted to nitrogen, carbon dioxide, and sodium chloride. The treatment is carried out at pH 9.0-10.0 and 25 deg to 55 deg C, the contact time being 2-6 hr. The mol ratio of sodium hypochlorite and cyanurate is kept between 6:1 and 8:1.
Fire Fighting Procedures
Water spray, alcohol resistant foam, powder, carbon dioxide.
Cyanuric acid is available as solid in powdered form or mainly in coarse granular form, > or = to 85% 10 - 100 mesh.
Coarse granulation, minimum of ca 85% 0.14-2 mm (-10 to 100 mesh). Typical commercial products containing greater than 98.5% cyanuric acid
Reactivities and Incompatibilities
Reacts with chlorine causing explosion hazard.
Violent reaction with ethanol.
Other Preventative Measures
Impervious protective clothing must be used whenever skin contact is likely. Contaminated work clothing can be cleaned at the facility or sent outside to a contract industrial laundry that has been informed of the potential hazards. Routine washing of hands, face and neck prior to breaks or lunch must be emphasized. Daily showers at the end of the work shift are required. Showers should be immediate for unplanned situations in which overt overexposures can occur such as spills or leaks.
Protective Equipment and Clothing
The substance irritates the respiratory tract and the eyes.

white powder
usageEng:Diagnostic determination of Melamine and related compounds in kidney tissue.
Safety Statements:26-37/39
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37/39:Wear suitable protective clothing, gloves and eye/face protection
Octanol/Water Partition Coefficient
log Kow = 1.95 (est)
Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer 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.
Reach Info
This substance has been officially registered by enterprises.
ECHA (EU chemicals Management Agency) published the completed registration file as follows:
Completed registration file:
Registered as ubmitted Total tonnage band  
FULL JOINT 10000_100000 view >
Registered companies:
Registrant / Supplier details Latest dossier received
3V Sigma S.p.A 2010
Budenheim Iberica S.L.U. 2013
more >

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According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name cyanuric acid

1.2 Other means of identification

Product number -
Other names 1,3,5-Triazine-2,4,6-triol,2,4,6-Trihydroxy-1,3,5-triazine

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Intermediates,Oxidizing/reducing agents,Process regulators,Solvents (which become part of product formulation or mixture)
Uses advised against no data available

1.4 Supplier's details

Company WWW.GuideChem.COM
Address 8F, Block C, No.3 Building, Zijin Plaza, No.701, Gudun Road, Hangzhou, Zhejiang 310030, China
Telephone +86-571-89739798
Fax 86(21)54365166

1.5 Emergency phone number

Emergency phone number +86-571-89739798
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Not classified.

2.2 GHS label elements, including precautionary statements

Pictogram(s) No symbol.
Signal word

No signal word.

Hazard statement(s)


Precautionary statement(s)








2.3 Other hazards which do not result in classification


3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
cyanuric acid cyanuric acid 108-80-5 none 100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

Fresh air, rest.

In case of skin contact

Rinse and then wash skin with water and soap.

In case of eye contact

Rinse with plenty of water for several minutes (remove contact lenses if easily possible).

If swallowed

Rinse mouth.

4.2 Most important symptoms/effects, acute and delayed

SYMPTOMS: Symptoms of exposure to this compound include, local irritation of the eyes. ACUTE/CHRONIC HAZARDS: Highly toxic. Hazardous decomposition products.

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist respirations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Activated charcoal is not effective ... . Do not attempt to neutralize because of exothermic reaction. Cover skin burns with dry, sterile dressings after decontamination ... . /Organic acids and related compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Water spray, alcohol resistant foam, powder, carbon dioxide.

5.2 Specific hazards arising from the chemical

no data available

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations.

6.3 Methods and materials for containment and cleaning up

Alkali and thermal treatment in filtration and precipitation was used to remove cyanuric acid from wastewaters.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Dry. Well closed. Separated from chlorine.Cyanuric acid should be stored in a dry place. Silos and pneumatic conveyors should be grounded to prevent electrostatic discharges.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state white crystalline granular or powder
Colour White crystalline solid
Odour Odorless
Melting point/ freezing point 47\u00b0C(lit.)
Boiling point or initial boiling point and boiling range 318\u00b0C(lit.)
Flammability Gives off irritating or toxic fumes (or gases) in a fire.
Lower and upper explosion limit / flammability limit no data available
Flash point 74\u00b0C(lit.)
Auto-ignition temperature no data available
Decomposition temperature 320-360\u00b0C
pH pH of saturated aqueous solution @ room temperature = 4.8
Kinematic viscosity no data available
Solubility In water:0.3 g/100mL (25 \u00baC)
Partition coefficient n-octanol/water (log value) log Kow = 1.95 (est)
Vapour pressure 0mmHg at 25\u00b0C
Density and/or relative density 2.5
Relative vapour density no data available
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Stable under recommended storage conditions.

10.3 Possibility of hazardous reactions

An amide and amine. Organic 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 generate mixed oxides of nitrogen (NOx)

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Reacts with chlorine causing explosion hazard.

10.6 Hazardous decomposition products

The substance decomposes on heating above 320-350\u00b0C producing (highly) toxic fumes including nitrogen oxides and cyanic acid.

11.Toxicological information

Acute toxicity

  • Oral: LD50 Rat, Sprague-Dawley (male & female) oral >5000 mg/kg bw
  • Inhalation: no data available
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available


no data available

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

  • Toxicity to fish: LC50 Pimephales promelas >2100 mg/L/96 hr; static. /Conditions of bioassay not specified in source examined
  • Toxicity to daphnia and other aquatic invertebrates: EC50 Daphnia magna 65.9 mg/L/21 d; reproduction rate; flow through, open system.
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

AEROBIC: A study using a Warburg respirometer with acclimated sewage sludge and 100 mg cyanuric acid found that cyanuric acid was inhibitory to biodegradation(1). Another study using COD, TOC, and UV with activated sludge found no degradation with cyanuric acid even with acclimated sludge(2). Cyanuric acid completely degraded in a study using s-triazine herbicide production wastes, HPLC and mixed (aerobic and anaerobic) bacteria cultures(4). Biodegradation of cyanuric acid by aerated activated sludge ranges from 14% at 8.7 mg/L DO and 5 hours, to 100% at 2.5 mg/L DO and 10 hours(5). After 16 days, 87% of labeled cyanuric acid had evolved as 14-CO2 and after 192 days, the percentage had increased to 99% in grab samples of aerobic soils (cyanuric acid concN 2.5 ppm)(3). In grab samples of saturated soil, 83% of labeled cyanuric acid had evolved as 14CO2 after 66 days, and after 375 days, the percentage increased to 99% (cyanuric acid concN 2.5 ppm)(3).

12.3 Bioaccumulative potential

BCF values of <0.1 and <0.5 were derived for cyanuric acid at concentrations of 10 and 1 mg/L, respectively, and using orange-red killifish (Oryzias latipes) which were exposed over an 6-week period(1). According to a classification scheme(2), this BCF range suggests bioconcentration in aquatic organisms is low(SRC).

12.4 Mobility in soil

The Koc of cyanuric acid is estimated as 58(SRC), using a water solubility of 2,593 mg/L(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that cyanuric acid is expected to have high mobility in soil. The pKa of cyanuric acid is 6.88(4), indicating that this compound will partially exist in the anion form in the environment and anions generally do not adsorb more strongly to soils containing organic carbon and clay than their neutral counterparts(5).

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods


The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1 UN Number

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.2 UN Proper Shipping Name

ADR/RID: unknown
IMDG: unknown
IATA: unknown

14.3 Transport hazard class(es)

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.4 Packing group, if applicable

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.5 Environmental hazards

ADR/RID: no IMDG: no IATA: no

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
cyanuric acid cyanuric acid 108-80-5 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Listed.
China Catalog of Hazardous chemicals 2015 Not Listed.
New Zealand Inventory of Chemicals (NZIoC) Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 10, 2017
Revision Date Aug 10, 2017

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%


  • IPCS - The International Chemical Safety Cards (ICSC), website:
  • HSDB - Hazardous Substances Data Bank, website:
  • IARC - International Agency for Research on Cancer, website:
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA - European Chemicals Agency, website:

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.

Precursor and Product
Computational chemical data

Molecular Weight:129.07422 [g/mol]
Molecular Formula:C3H3N3O3
H-Bond Donor:3
H-Bond Acceptor:3
Rotatable Bond Count:0
Tautomer Count:5
Exact Mass:129.017441
MonoIsotopic Mass:129.017441
Topological Polar Surface Area:87.3
Heavy Atom Count:9
Formal Charge:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Acceptor Count:3
Feature 3D Donor Count:3
Feature 3D Ring Count:1
Effective Rotor Count:0
Conformer Sampling RMSD:0.4
CID Conformer Count:1