Safety data sheet
According to EC Directive 91/155/EEC
MERCK Schuchardt
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1. Identification of the substance/preparation and of the company/undertaking
Identification of the product
Catalogue No.: 823262
Product name: Hydrogen fluoride for synthesis

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
CAS-No.: 7664-39-3 EC-Index-No.: 009-002-00-6
Molar mass: 20.01 EINECS-No.: 231-634-8
Molecular formula: HF

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3. Hazards identification
Very toxic by inhalation, in contact with skin and if swallowed. Causes severe burns.

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4. First aid measures
First-aid personnel: ensure self-protection!
After inhalation: fresh air. If necessary, apply mouth-to-mouth resuscitation or mechanical ventilation. Immediately summon doctor.
After skin contact: wash off with plenty of water. Rinse off with polyethylene glycol 400. Immediately remove contaminated clothing. If necessary, apply compresses thoroughly moistened with 10% calcium gluconate solution.
After eye contact: rinse out with plenty of water for at least 10 minutes with the eyelid held wide open. Immediately summon eye specialist.

Indications for the doctor: Symptomatic treatment.

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

Special risks:
Non-combustible. Hydrogen may form upon contact with metals (danger of explosion!).

Special protective equipment for fire fighting:
Do not stay in dangerous zone without suitable chemical protection clothing and self-contained breathing apparatus.

Other information:
Cool container with spray water from a save distance. Contain escaping vapours with water. Prevent fire-fighting water from entering surface water or groundwater.

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6. Accidental release measures
Stop flow of gas, move leaking cylinder to open air if without risk.

Person-related precautionary measures:
Do not inhale vapours. Avoid substance contact.

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7. Handling and storage
Handling:
No further requirements.

Storage:
tightly closed , in a well-ventilated place , dry , access only for specialists

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8. Exposure controls/personal protection
Specific control parameter
MAK Germany (max. workplace conc.)
Hydrogen fluoride 3 ml/m3 or 2.5 mg/m3

Personal protective equipment:
Respiratory protection: required when vapours are generated. Filter B (acc. to DIN 3181) for inorganic gases and vapours
Eye protection: required
Hand protection: required
Other protective equipment: Acid-resistant protective clothing.
Industrial hygiene: Immediately change contaminated clothing. Apply skin- protective barrier cream. Wash hands and face after working with substance. Under no circumstances eat or drink at workplace. Work under hood . Do not inhale substance.

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9. Physical and chemical properties
Form: gas
Colour: colourless
Odour: pungent
pH value not available
Melting temperature -83 °C
Boiling temperature 19 °C
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Vapour pressure (20 °C) 1088 hPa
Solubility in water (0 °C) freely soluble
ethanol (20 °C) soluble

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

Substances to be avoided
increased reactivity with alkali metals , alkaline earth metals and light metals

Hazardous decomposition products
no information available

Further information
extremely hygroscopic ; unsuitable working materials: glass

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11. Toxicological information
Acute toxicity
LC50 (inhalation, rat): 265 mg/m3 /4 h

Further toxicological information
After inhalation of vapours: strongly corrosive damage of respiratory tract Resultant lesions may affectthe following: bronchitis , pneumonia , pulmonary oedema
After skin contact: burns Possible damages: necrosis Tendency of poor wound-healing after penetration of the substance.
After eye contact: Burns. Risk of blindness!

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

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12. Ecological information
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: 8 Number and letter:
ADR/RID class: 8 Number and letter:
Name of material: 1052 FLUORWASSERSTOFF, WASSERFREI

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 8 UN-No.: 1052 Packaging group: I
Ems: 8-03 MFAG: 750
Correct technical name: HYDROGEN FLUORIDE,ANHYDROUS

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 8/6.1 UN/ID-No.: 1052 Packaging group:
Correct technical name: HYDROGEN FLUORIDE,ANHYDROUS VERBOTEN

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.

EXCLUDED FROM TRANSPORT BY AIR!

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15. Regulatory information
Labelling according to EC Directives
Symbol: T+ Very toxic immediately and show this container or label.
C Corrosive immediately and show this container or label.
R-phrases: R 26/27/28-35 Very toxic by inhalation, in contact with skin and if swallowed. Causes severe burns.
S-phrases: S 7/9-26-36/37/39-45 Keep container tightly closed and in a well-ventilated place. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
EC-No.: 231-634-8 EC label

German regulations
Water pollution class 1 (slightly polluting substance)

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16. Other information
Reason for alteration
General update.

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