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.: 159344
Product name: Sodium tetraborate 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
Borax ; Sodium biborate decahydrate ; Sodium borate decahydrate

CAS-No.: 1303-96-4 EC-Index-No.: -
Molar mass: - EINECS-No.: 215-540-4
Molecular formula: B4Na2O7 * 10H2O

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3. Hazards identification
Harmful 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 with the eyelid held wide open.
After swallowing: make victim drink plenty of water, induce vomiting, summon doctor.

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

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. Storage temperature: no restrictions.

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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: Change contaminated clothing. Wash hands after working with substance.

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9. Physical and chemical properties
pH value
at 40 g/l water (20 °C) ~ 9 - 10
Melting temperature not available
Boiling temperature not available
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Solubility in not available

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

Substances to be avoided
no information available

Hazardous decomposition products
no information available

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11. Toxicological information
Acute toxicity
LD50 (oral, rat): 2660 mg/kg ;
LDLo (oral, human): 709 mg/kg ;

Further toxicological information

After skin contact: absorption
After swallowing: Rapid absorption.
Absorption via: gastrointestinal tract , skin , mucous membranes

The following applies to boron compounds in general: resorption is followed by nausea and vomiting, agitation, spasms, CNS disorders, cardiovascular disorders.

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
Behavior in environmental compartments:
Evaluation number (FRG) (bacteria): 2.9 (unhydrous substance) ; Evaluation number (FRG) (fish): 3.1 (unhydrous substance) ; Evaluation number (FRG) (mammal): 3 (unhydrous substance) ;

Ecotoxic effects:
Biological effects: Herbicidal effect.
Fish toxicity: fish LC50: 807 mg/l (unhydrous substance)

Further ecologic data:
Trace element. Fertilizing effect possible.

The following applies to boron compounds in general: biological effects: boric acid developing as a result of hydrolysis toxic for aquatic organisms; fish: Gambusia affinis 96 h. LC50: 5600 mg/l; 24 h. LC50:1800 mg/l; plants: as toxic from 1 mg/l .

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
Not subject to transport regulations.

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15. Regulatory information
Labelling according to EC Directives
Symbol: Xn Harmful immediately and show this container or label.
R-phrases: R 22 Harmful if swallowed.
S-phrases: ---

German regulations
Water pollution class 1 (slightly polluting substance)

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16. Other information
Reason for alteration
General update.
Addition in the chapter ecology.
Addition in the chapter toxicology.

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