Safety data sheet
According to EC Directive 91/155/EEC
MERCK
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1. Identification of the substance/preparation and of the company/undertaking
Identification of the product
Catalogue No.: 104942
Product name: Potassium chlorate extra pure Ph Helv

Manufacturer/supplier identification
Company: Merck Ltd.
9th Floor, Monterey Tower, 2170 New Petchburi Road, Bangkapi, Huaykwang, Bangkok 10320
Tel: (662) 308 - 0218

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2. Composition/information on ingredients
Synonyms
chloric acid potassium salt

CAS-No.: 3811-04-9 EC-Index-No.: 017-004-00-3
Molar mass: 122.55 EINECS-No.: 223-289-7
Molecular formula: KClO3

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3. Hazards identification
Explosive when mixed with combustible material. Harmful by inhalation and if swallowed.

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4. First aid measures
After inhalation: fresh air.
After skin contact: wash off with plenty of water. Remove contaminated clothing.
After eye contact: rinse out with plenty of water for at least 10 minutes with the eyelid held wide open. Immediately summon eye specialist.
After swallowing: immediately make victim drink plenty of water followed by milk, induce vomiting, keep airways free, summon doctor. Gastric lavage.

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5. Fire-fighting measures
Suitable extinguishing media:
water , foam , powder

Special risks:
Fire-promoting. Keep away from combustible materials. Avoid percussion and friction.

Other information:
Non-combustible.

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6. Accidental release measures
Person-related precautionary measures:
Avoid substance contact.
Environmental-protection measures:
Do not allow to enter sewerage system.
Procedures for cleaning / absorption:
Take up dry. Forward for disposal. Clean up affected area.

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7. Handling and storage
Handling:
No further requirements.

Storage:
At +15C to +25C. Tightly closed. Dry. In a well-ventilated place. Away from combustible substances. Keep away from sources of ignition and heat.

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8. Exposure controls/personal protection
Personal protective equipment:
Respiratory protection: required when dusts are generated.
Eye protection: required
Hand protection: required
Industrial hygiene: Immediately change contaminated clothing. Apply skin- protective barrier cream. Wash hands and face after working with substance.

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9. Physical and chemical properties
Form: solid
Colour: white
Odour: odourless
pH value
at 73 g/l water (20 C) ประมาณ 5.6
Melting temperature 356 C
Boiling temperature not available
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Density (20 C) 2.32 g/cm3
Solubility in water (20 C) ประมาณ 73 g/l
water (100 C) ประมาณ 562 g/l
Thermal decomposition > 400 C

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10. Stability and reactivity
Conditions to be avoided
no information available

Substances to be avoided
Risk of explosion with: organic combustible substances , metals in powder form , sulfides , hydrocarbons , ammonium compounds , reducing agents , phosphorus , hydrides , fluorine , alkali metals , cyanides , alkali amides , sulfur , alcohols

Hazardous decomposition products
no information available

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11. Toxicological information
Acute toxicity
LDLo (human): > 10 g
LDLo (child): > 5 g

Further toxicological information
After inhalation: irritant effect
After skin contact: Irritations.
After eye contact: Irritations. mucosal irritations Absorption via: mucous membrane
After absorption: methaemoglobinaemia
After swallowing: nausea , vomiting , pain , diarrhoea , cyanosis , collapse , spasms , respiratory arrest , death

Further data
Further hazardous properties cannot be excluded. The product should be handled with the care usual when dealing with chemicals.

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12. Ecological information
Ecotoxic effects:
Toxic for aquatic organisms. aquatic organisms LC50: 100 mg/l /96 h ; Daphnia toxicity: Daphnia magna LC50: 880 mg/l ; Bacterial toxicity: Ps.pudita EC0: 1900 mg/l Algeal toxicity: Sc.quadricauda EC0: 0.24 mg/l ; M.aeruginosa EC0: 12 mg/l ; Fish toxicity: L.idus LC50: 3500 mg/l
Further ecologic data:
Do not allow to enter waters, waste water, or soil!

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13. Disposal considerations
Product:
There are no uniform EC Regulations for the disposal of chemicals or residues. Chemical residues generally count as special waste. The disposal of the latter is regulated in the EC member countries through corresponding laws and regulations. We recommend that you contact either the authorities in charge or approved waste disposal companies which will advise you on how to dispose of special waste.

Packaging:
Disposal in compliance with official regulations. Handle contaminated packaging in the same way as the substance itself. If not officially specified differently, non-contaminated packaging may be treated like household waste or recycled.

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14. Transport information
Transport over land ADR/RID and GGVS/GGVE (Germany)
GGVS/GGVE class: 5.1 Number and letter: 11b
ADR/RID class: 5.1 Number and letter: 11b
Name of material: 1485 KALIUMCHLORAT

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 5.1 UN-No.: 1485 Packaging group: II
Ems: 5.1-06 MFAG: 745
Correct technical name: POTASSIUM CHLORATE

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 5.1 UN/ID-No.: 1485 Packaging group: II
Correct technical name: POTASSIUM CHLORATE

The transport regulations are cited according to international regulations and in the form applicable in Germany (GGVS/GGVE). Possible national deviations in other countries are not considered.

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15. Regulatory information
Labelling according to EC Directives
Symbol: O Oxidizing immediately and show this container or label.
Xn Harmful immediately and show this container or label.
R-phrases: R 9-20/22 Explosive when mixed with combustible material. Harmful by inhalation and if swallowed.
S-phrases: S 2-13-16-27 Keep out of reach of children. Keep away from food, drink and animal feeding stuffs. Keep away from sources of ignition - No smoking. Take off immediately all contaminated clothing.
EC-No.: 223-289-7 EC label

German regulations
Water pollution class 2 (polluting substance)

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16. Other information
Reason for alteration
General update.

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