Pyrocatechol SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Pyrocatechol
- CAS： 120-80-9
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses： For R&D use only. Not for medicinal, household or other use.
- Uses advised against： none
Company Identification
- Company：Chemicalbook.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
Classification of the substance or mixture
Acute toxicity - Category 3, Oral
Acute toxicity - Category 3, Dermal
Skin irritation, Category 2
Eye irritation, Category 2
Germ cell mutagenicity, Category 2
Carcinogenicity, Category 1B
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H301 Toxic if swallowed
H311 Toxic in contact with skin
H315 Causes skin irritation
H319 Causes serious eye irritation
H341 Suspected of causing genetic defects
H350 May cause cancer
P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P203 Obtain, read and follow all safety instructions before use.
P301+P316 IF SWALLOWED: Get emergency medical help immediately.
P321 Specific treatment (see ... on this label).
P330 Rinse mouth.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P316 Get emergency medical help immediately.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P332+P317 If skin irritation occurs: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P318 IF exposed or concerned, get medical advice.
P405 Store locked up.
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Pyrocatechol
- Common names and synonyms: Pyrocatechol
- CAS number: 120-80-9
- EC number: 204-427-5
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
Rinse mouth. Give one or two glasses of water to drink. Refer immediately for medical attention.
Most important symptoms/effects, acute and delayed
DUST: Irritating to eyes, nose and throat. If inhaled will cause coughing or difficult breathing. SOLID: Will burn skin and eyes. Harmful if swallowed. (USCG, 1999)
Indication of immediate medical attention and special treatment needed, if necessary
Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. Phenols and related compounds
SECTION 5: Firefighting measures
Suitable extinguishing media
To fight fire, use water, carbon dioxide, dry chemical
Specific hazards arising from the chemical
Combustible. POISONOUS GASES MAY BE PRODUCED WHEN HEATED. May form toxic fumes at high temperatures. (USCG, 1999)
Special protective actions for fire-fighters
Use water spray, dry powder, alcohol-resistant foam, carbon dioxide.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.
Environmental precautions
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.
Methods and materials for containment and cleaning up
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames. NO contact with oxidizing agents. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Well closed. Separated from oxidants and food and feedstuffs. Keep in the dark. Ventilation along the floor. Store in an area without drain or sewer access.Separated from strong oxidants, food and feedstuffs. Keep in the dark. Ventilation along the floor.
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 5 ppm as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans)
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear face shield or eye protection in combination with breathing protection.
Protective gloves. Protective clothing.
Use local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Solid. Flakes.
-
Colour：
Brown shavings.
-
Odour：
Faint characteristic odor
-
Melting point/freezing point：
105 °C.
-
Boiling point or initial boiling point and boiling range：
245.5 °C. Atm. press.:1 013 hPa. Remarks:Sublimation,?vapour?elimination.;245 °C. Atm. press.:1 000 hPa. Remarks:Data from Safety assessment (1986).
-
Flammability：
Combustible Solid
-
Lower and upper explosion limit/flammability limit：
Flammability lower limit (vapor in air): 1.97%
-
Flash point：
127 °C.
-
Auto-ignition temperature：
510 °C. Remarks:No information on pressure are available.
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
no data available
-
Solubility：
Miscible with water
-
Partition coefficient n-octanol/water：
log Pow = 0.88. Temperature:25 °C. Remarks:Measured value reported in Garst & Wilson (1984).;log Pow = 0.9. Temperature:25 °C. Remarks:Measured value #1 reported in Garst (1984).;log Pow = 0.95. Temperature:25 °C. Remarks:Measured value #2 reported in Garst (1984).
-
Vapour pressure：
6.66 hPa. Temperature:104 °C.;13.3 hPa. Temperature:118.3 °C.;53.3 hPa. Temperature:150.6 °C.
-
Density and/or relative density：
1.34 g/cm3. Temperature:15 °C.;1.34 - 1.37 g/cm3. Temperature:15 °C.
-
Relative vapour density：
3.8 (vs air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
On combustion, forms toxic fumes. Reacts violently with oxidants. This generates fire and explosion hazard.
Chemical stability
Discolors in air and light ... its aqueous solution soon turns brown.
Possibility of hazardous reactions
Combustible when exposed to heat or flame.POISONOUS GASES MAY BE PRODUCED WHEN HEATED. CATECHOL may form toxic fumes at high temperatures. (USCG, 1999). This compound can react with acid chlorides, acid anhydrides, bases and oxidizing agents. It reacts violently on contact with concentrated nitric acid. It acts as a reducing agent (NTP, 1992).
Conditions to avoid
no data available
Incompatible materials
Can react vigorously with oxidizing materials
Hazardous decomposition products
Decomposition compounds: phenol derivatives, carbon oxides, irritating smokes.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 - rat (male) - 300 mg/kg bw.
- Inhalation: LC0 - rat (female) - >= 2.8 mg/L air.
- Dermal: LD50 - rat (male/female) - 600 mg/kg bw.
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
Carcinogenicity
Evaluation: No epidemiological data relevant to the carcinogenicity of catechol were available. There is sufficient evidence in experimental animals for the carcinogenicity of catechol. OVERALL EVALUATION: Catechol is possibly carcinogenic to humans (Group 2B).
Reproductive toxicity
No information is available on the reproductive or developmental effects of catechol in humans or animals.
STOT-single exposure
The substance is irritating to the skin and respiratory tract. The substance is corrosive to the eyes. The substance may cause effects on the central nervous system. This may result in depression, convulsions and respiratory failure. Exposure could cause rise of blood pressure.
STOT-repeated exposure
Repeated or prolonged contact may cause skin sensitization. This substance is possibly carcinogenic to humans. May cause heritable genetic damage to human germ cells.
Aspiration hazard
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: LC50 - Pimephales promelas - 9.22 mg/L - 96 h.
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - 1.09 mg/L - 48 h.
- Toxicity to algae: EC50 - Chlorella vulgaris - 22 mg/L - 96 h.
- Toxicity to microorganisms: IC50 - Tetrahymena pyriformis - 19.58 mg/L - 48 h.
Persistence and degradability
AEROBIC: Catechol is moderately to readily biodegraded in soils based on a residence time of 1 day for 500 mg of catechol in chernozem soil on hard carbonaceous woody loam (pH 7.1-7.5, 19 deg C)(1). The percent biodegradation (measured as percentage of recovered 14CO2 activity) after 6 months at 23 deg C in Steinbeck loam (pH 5.0), Fallbrook sandy loam (pH 5.5), Greenfield sandy loam (pH 7.0), and Sorrento loam (pH 7.4) were 24, 50, 28, and 26%, respectively(2). The soil bacteria Agrobacterium radiobacter was shown to biodegrade catechol(3).
Bioaccumulative potential
An estimated BCF of 3 was calculated for catechol(SRC), using a log Kow of 0.88(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).
Mobility in soil
The Koc of catechol in Brookston clay loam has been reported to be 118(1). According to a classification scheme(2), this Koc value suggests that catechol is expected to have high mobility in soil.
Other adverse effects
no data available
SECTION 13: Disposal considerations
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.
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.
SECTION 14: Transport information
UN Number
ADR/RID: UN2811 (For reference only, please check.)
IMDG: UN2811 (For reference only, please check.)
IATA: UN2811 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: TOXIC SOLID, ORGANIC, N.O.S. (For reference only, please check.)
IMDG: TOXIC SOLID, ORGANIC, N.O.S. (For reference only, please check.)
IATA: TOXIC SOLID, ORGANIC, N.O.S. (For reference only, please check.)
Transport hazard class(es)
ADR/RID: 6.1 (For reference only, please check.)
IMDG: 6.1 (For reference only, please check.)
IATA: 6.1 (For reference only, please check.)
Packing group, if applicable
ADR/RID: I (For reference only, please check.)
IMDG: I (For reference only, please check.)
IATA: I (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
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%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/