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.: 159735
Product name: Sodium carbonate (volumetric standard) anhydrous Reag. Ph Eur

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
anhydrous soda

CAS-No.: 497-19-8 EC-Index-No.: 011-005-00-2
Molar mass: 105.99 EINECS-No.: 207-838-8
Molecular formula: CNa2O3

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3. Hazards identification
Irritating to eyes.

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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 with the eyelid held wide open. Summon eye specialist.
After swallowing: immediately make victim drink plenty of water (if necessary several litres). Summon doctor.

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5. Fire-fighting measures
Suitable extinguishing media:
In adaption to materials stored in the immediate neighbourhood.

Special risks:
none

Other information:
Non-combustible.

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6. Accidental release measures
Person-related precautionary measures:
Avoid generation of dusts; do not inhale dusts.

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. In a well-ventilated place. Cool (+2°C to +8°C). The data on storage temperature apply to the entire pack.

Requirements for storage rooms and containers:
Do not use light-weight-metal containers.

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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: odourless
pH value
at 50 g/l water (25 °C) 11.5
Melting temperature ~ 891 °C
Boiling temperature not available
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Density (20 °C) ~ 2.53 g/cm3
Solubility in water (20 °C) ~ 210 g/l

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

Substances to be avoided
aluminium , alkaline earth metals in powder form , organic nitro compounds , fluorine , alkali metals , nonmetallic oxides / heat , conc. sulfuric acid

Hazardous decomposition products
no information available

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11. Toxicological information
Acute toxicity
LD50 (oral, rat): 4090 mg/kg ;
LC50 (inhalation, rat): 2300 mg/m3 /2 h ;

Further toxicological information
Substance properties: strong irritant effect
After inhalation of dust: Irritation symptoms in the respiratory tract.
After contact with substance: Severe irritations of: eyes , skin , mucous membranes
After swallowing: irritations of mucous membranes in the mouth, pharynx, oesophagus and gastrointestinal tract.

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12. Ecological information
Ecotoxic effects:
Quantitative data on the ecological effect of this product are not available.

Biological effects:
Toxic for aquatic organisms Harmful effect due to pH shift.

Further ecologic data:
No ecological problems are to be expected when the product is handled and used with due care and attention.

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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
Not subject to transport regulations.

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15. Regulatory information
Labelling according to EC Directives
Symbol: Xi Irritant immediately and show this container or label.
R-phrases: R 36 Irritating to eyes.
S-phrases: S 22-26 Do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
EC-No.: 207-838-8 EC label

German regulations
Water pollution class 1 (slightly polluting substance)

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16. Other information
Reduced labelling on the container due to small quantity.

Reason for alteration
General update.

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