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.: 106200
Product name: Naphthalene scintillation grade

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
Organic substance.

CAS-No.: 91-20-3 EC-Index-No.: -
Molar mass: 128.16 EINECS-No.: 202-049-5
Molecular formula: C10H8

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3. Hazards identification
Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

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4. First aid measures
After inhalation: fresh air. Summon doctor if necessary.
After skin contact: wash off with plenty of water. Remove contaminated clothing.
After eye contact: rinse out with plenty of water with the eyelid held wide open. Summon eye specialist.
After swallowing: Drink plenty of water. Induce vomiting. Subsequently administer: activated charcoal (20 - 40 g in 10% slurry). Summon doctor. No milk. No castor oil. No alcohol.

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5. Fire-fighting measures
Suitable extinguishing media:
Water, CO2, foam, powder.

Special risks:
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:
Tightly closed. Dry. Cool. In a well-ventilated place. Keep away from sources of ignition and heat. Observe national regulations.

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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

Protective clothing should be selected specifically for the working place, depending on concentration and quantity of the hazardous substances handled. The resistance of the protective clothing to chemicals should be ascertained with the respective supplier.
Industrial hygiene: Change contaminated clothing. Application of skin- protective barrier cream recommended. Wash hands after working with substance.

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9. Physical and chemical properties
Form: solid
Colour: white
Odour: characteristic
pH value not available
Melting temperature 79 - 82 °C
Boiling temperature 218 °C
Ignition temperature 540 °C
Flash point 80 °C
Explosion limits lower 0.9 Vol%
upper 5.9 Vol%
Vapour pressure (20 °C) 0.066 mbar
Density (20 °C) 1.15 g/cm3
Solubility in water (20 °C) 0.3 g/l
ethanol (20 °C) 77 g/l

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10. Stability and reactivity
Conditions to be avoided
Strong heating.

Substances to be avoided
Violent reactions possible with: oxidizing agent , nitrogen oxides

Hazardous decomposition products
no information available

Further information
dust explosion possible
Explosible with air in a vaporous/gaseous state when heated.

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11. Toxicological information
Acute toxicity
LD50 (oral, rat): > 2000 mg/kg
LC50 (inhalation, rat): > 100 mg/l /4 h
LD50 (dermal, rat): > 2500 mg/kg

Subacute to chronic toxicity
The carcinogenic potential requires further clarification.
Not mutagenic in the acute test.

Further toxicological information
After inhalation of dust: Irritation symptoms in the respiratory tract.
After skin contact: dermatitis Danger of skin absorption.
After eye contact: Irritations. Risk of corneal clouding.
Systemic effects: gastrointestinal complaints , tremor , spasms , respiratory paralysis , changes in the blood picture

Further data
The product should be handled with the care usual when dealing with chemicals.

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12. Ecological information
Ecotoxicity effects:
Biological effects:
Toxic for aquatic organisms. aquatic organisms LC50: 1 mg/l /96 h fish LC50: 0.12 mg/l /96 h Algeal toxicity: algae EC50: 33 mg/l /24 h
Evaluation number (FRG) (fish): 5.0 ; Evaluation number (FRG) (mammal): 2.0

Further ecologic data:
Degradability:
BOD 0 % of ThOD /5 d ; COD 22 % of ThOD , ThOD: 2.99 g/g

Hazard for drinking water supplies. Hardly eliminable.
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: 4.1 Number and letter: 6c
ADR/RID class: 4.1 Number and letter: 6c
Name of material: 1334 NAPHTHALEN, RAFFINIERT

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 4.1 UN-No.: 1334 Packaging group: III
Ems: 4.1-05 MFAG: 314
Correct technical name: NAPHTHALENE, REFINED - MARINE POLLUTANT

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 4.1 UN/ID-No.: 1334 Packaging group: III
Correct technical name: NAPHTHALENE, REFINED

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: N Dangerous for the environment immediately and show this container or label.
R-phrases: R 50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S-phrases: S 61 Avoid release to the environment. Refer to special instructions/Safety data sheets.
EC-No.: 202-049-5 EC label

German regulations
Water pollution class 2 (polluting substance)

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16. Other information
Reason for alteration
See chapter 8

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