information Related products Suppliers

Pyrazole

IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING

1.1

Product identifiers

Product name

CAS-No.

Pyrazole

288-13-1

1.2

Relevant identified uses of the substance or mixture and uses advised against

Identified uses

Laboratory chemicals, Manufacture of substances

2.1

2.2

HAZARDS IDENTIFICATION

Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP]

Acute toxicity, Oral (Category 4)

Skin irritation (Category 2)

Eye irritation (Category 2)

Specific target organ toxicity - single exposure (Category 3)

Classification according to EU Directives 67/548/EEC or 1999/45/EC

Harmful if swallowed. Irritating to eyes, respiratory system and skin. Harmful to aquatic organisms.

Label elements

Labelling according Regulation (EC) No 1272/2008 [CLP]

Pictogram

Signal word

Hazard statement(s)

H302

H315

H319

H335

Precautionary statement(s)

P261

P305 + P351 + P338

Supplemental Hazard

Warning

Harmful if swallowed.

Causes skin irritation.

Causes serious eye irritation.

May cause respiratory irritation.

Avoid breathing dust/ fume/ gas/ mist/ vapours/ spray.

IF IN EYES: Rinse cautiously with water for several minutes. Remove

contact lenses, if present and easy to do. Continue rinsing.

none

Statements

According to European Directive 67/548/EEC as amended.

Hazard symbol(s)

R-phrase(s)

R22

R36/37/38

R52

S-phrase(s)

S26

S36/37

S61

Harmful if swallowed.

Irritating to eyes, respiratory system and skin.

Harmful to aquatic organisms.

In case of contact with eyes, rinse immediately with plenty of water and

seek medical advice.

Wear suitable protective clothing and gloves.

Avoid release to the environment. Refer to special instructions/ Safety

data sheets.

2.3

3.1

Other hazards - none

COMPOSITION/INFORMATION ON INGREDIENTS

Substances

Formula

Molecular Weight

Component

Pyrazole

C3H4N2

68,08 g/mol

Concentration

4.1

CAS-No.

EC-No.

FIRST AID MEASURES

Description of first aid measures

288-13-1

206-017-1

General advice

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

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

4.2

4.3

5.1

5.2

5.3

5.4

6.1

6.2

6.3

6.4

7.1

7.2

7.3

8.1

8.2

9.1

Most important symptoms and effects, both acute and delayed

Teratogenic in rats, producing a high incidence of ocular and urinary bladder anomalies., Rats fed pyrazole

for 24 days showed:, hyperbilirubinemia, retarded growth, Hypoglycemia, mitochondrial dysfunction,

Increased:, liver weight, Rats dying after lethal doses (6-11 days) showed extensive centrolobular necrosis

with inflammatory reactions in the parenchyma, and fatty changes in surviving cells.

Indication of immediate medical attention and special treatment needed

no data available

FIRE-FIGHTING MEASURES

Extinguishing media

Suitable extinguishing media

Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

Special hazards arising from the substance or mixture

Carbon oxides, nitrogen oxides (NOx)

Precautions for fire-fighters

Wear self contained breathing apparatus for fire fighting if necessary.

Further information

no data available

ACCIDENTAL RELEASE MEASURES

Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure

adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.

Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the

environment must be avoided.

Methods and materials for containment and cleaning up

Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed

containers for disposal.

Reference to other sections

For disposal see section 13.

HANDLING AND STORAGE

Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols.

Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire

protection.

Conditions for safe storage, including any incompatibilities

Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

Specific end uses

no data available

EXPOSURE CONTROLS/PERSONAL PROTECTION

Control parameters

Components with workplace control parameters

Exposure controls

Appropriate engineering controls

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

the end of workday.

Personal protective equipment

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

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.

Body Protection

Complete suit protecting against chemicals, The type of protective equipment must be selected

according to the concentration and amount of the dangerous substance at the specific workplace.

Respiratory protection

For nuisance exposures use type P95 (US) or type P1 (EU EN 143) particle respirator.For higher

level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use

respirators and components tested and approved under appropriate government standards such as

NIOSH (US) or CEN (EU).

PHYSICAL AND CHEMICAL PROPERTIES

Information on basic physical and chemical properties

Appearance

Odour

Odour Threshold

Melting/freezing point

Initial boiling point and

boiling range

Flash point

Evaporation rate

Form: crystalline

Colour: colourless

no data available

Melting point/range: 67 - 70 °C

Melting point/range: 66 - 70 °C

186 - 188 °C

no data available

Flammability (solid, gas) no data available

Upper/lower

flammability or

explosive limits

Vapour pressure

Vapour density

no data available

m) Relative density

no data available

Water solubility

Partition coefficient: n-

octanol/water

Autoignition

temperature

Decomposition

temperature

Viscosity

Explosive properties

Oxidizing properties

no data available

9.2

10.

10.1

10.2

10.3

10.4

10.5

10.6

11.

11.1

Other safety information

no data available

STABILITY AND REACTIVITY

Reactivity

no data available

Chemical stability

no data available

Possibility of hazardous reactions

no data available

Conditions to avoid

no data available

Incompatible materials

acids, Oxidizing agents

Hazardous decomposition products

Other decomposition products - no data available

TOXICOLOGICAL INFORMATION

Information on toxicological effects

Acute toxicity

LD50 Oral - rat - 1.010 mg/kg

Remarks: Behavioral:Coma. Liver:Hepatitis (hepatocellular necrosis), zonal. Liver:Fatty liver degeneration.

Skin corrosion/irritation

no data available

Serious eye damage/eye irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

IARC:

No component of this product present at levels greater than or equal to 0.1% is identified as

probable, possible or confirmed human carcinogen by IARC.

Reproductive toxicity

Reproductive toxicity - rat - Oral

Effects on Fertility: Post-implantation mortality (e.g., dead and/or resorbed implants per total number of

implants).

Developmental Toxicity - mouse - Intraperitoneal

Effects on Embryo or Fetus: Fetotoxicity (except death, e.g., stunted fetus). Effects on Embryo or Fetus:

Fetal death.

Developmental Toxicity - rat - Oral

Specific Developmental Abnormalities: Eye, ear. Specific Developmental Abnormalities: Urogenital system.

Specific target organ toxicity - single exposure

Inhalation - May cause respiratory irritation.

Specific target organ toxicity - repeated exposure

no data available

Aspiration hazard

no data available

Potential health effects

Inhalation

Ingestion

Skin

Eyes

May be harmful if inhaled. Causes respiratory tract irritation.

Harmful if swallowed.

May be harmful if absorbed through skin. Causes skin irritation.

Causes serious eye irritation.

Signs and Symptoms of Exposure

Teratogenic in rats, producing a high incidence of ocular and urinary bladder anomalies., Rats fed pyrazole

for 24 days showed:, hyperbilirubinemia, retarded growth, Hypoglycemia, mitochondrial dysfunction,

Increased:, liver weight, Rats dying after lethal doses (6-11 days) showed extensive centrolobular necrosis

with inflammatory reactions in the parenchyma, and fatty changes in surviving cells.

Additional Information

RTECS: UQ4900000

12.

12.1

ECOLOGICAL INFORMATION

Toxicity

Toxicity to fish

Toxicity to daphnia and

other aquatic

invertebrates.

LC50 - Lepomis macrochirus (Bluegill) - 66 - 111 mg/l - 96 h

EC50 - Daphnia magna (Water flea) - 24 - 60 mg/l - 48 h

12.2

12.3

12.4

12.5

12.6

13.

13.1

14.

14.1

Persistence and degradability

no data available

Bioaccumulative potential

no data available

Mobility in soil

no data available

Results of PBT and vPvB assessment

no data available

Other adverse effects

Harmful to aquatic life.

DISPOSAL CONSIDERATIONS

Waste treatment methods

Product

Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional

waste disposal service to dispose of this material. Dissolve or mix the material with a combustible solvent

and burn in a chemical incinerator equipped with an afterburner and scrubber.

Contaminated packaging

Dispose of as unused product.

TRANSPORT INFORMATION

UN-Number

14.2

14.3

14.4

14.5

14.6

15.

ADR/RID: -

UN proper shipping name

ADR/RID:

Not dangerous goods

IMDG:

Not dangerous goods

IATA:

Not dangerous goods

Transport hazard class(es)

ADR/RID: -

Packaging group

ADR/RID: -

Environmental hazards

ADR/RID: no

Special precautions for users

no data available

REGULATORY INFORMATION

IMDG: -

IMDG Marine pollutant: no

IATA: -

IATA: no

This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006.

15.1

15.2

16.

Safety, health and environmental regulations/legislation specific for the substance or mixture

no data available

Chemical Safety Assessment

no data available

OTHER INFORMATION

Further information

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 this document is based on the resent 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. Lookchem shall not be
held liable for any damage resulting from handling or from contact with the above product.
See reverse side of invoice or packing slip for additional terms and conditions of sale.

;