Safety data sheet
According to EC Directive 91/155/EEC
1. Identification of the substance/preparation and of the company/undertaking
Identification of the product
Catalogue No.: 106437
Product name: Sodium cyanide pure

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

2. Composition/information on ingredients
CAS-No.: 143-33-9 EC-Index-No.: 006-007-00-5
Molar mass: 49.01 EINECS-No.: 205-599-4
Molecular formula: NaCN

3. Hazards identification
Very toxic by inhalation, in contact with skin and if swallowed. Contact with acids liberates very toxic gas.

4. First aid measures

General information: Rapid action is called for. First-aid personnel: ensure self-protection! Immediately summon doctor (mentioning hydrocyanic acid poisoning). If breathing stops: immediately apply mechanical ventilation, if necessary also oxygen.

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: if victim is still conscious, make him drink plenty of water, induce vomiting, administer activated charcoal (20 - 40 g in 10% slurry). Immediately summon doctor.
Instructions for the doctor: Keep antidotes ready ( sodium thiosulfate , dimethylaminophenol , Cobalt-EDTA )

5. Fire-fighting measures
Suitable extinguishing media:
CO2, powder. Fire extinguisher: powder , carbon dioxide

Extinguishing media not to be used:

Special risks:
Non-combustible. Development of hazardous combustion gases or vapours possible in the event of fire. Do not allow product to come into contact with water.
The following may develop in event of fire: hydrogen cyanide

6. Accidental release measures
Person-related precautionary measures:
Avoid inhalation of dusts in all circumstances.
Environmental-protection measures:
Do not allow to enter sewerage system.
Procedures for cleaning / absorption:
Carefully take up dry. Forward for disposal. Clean up affected area.

7. Handling and storage
No further requirements.

Tightly closed. Dry. In a well-ventilated place. At +15C to +25C. Accessible only for authorized persons.
Requirements for storage rooms and containers:
No metal containers.

8. Exposure controls/personal protection
Specific control parameter
MAK Germany (max. workplace conc.)
Cyanides (as CN) 5 mg/m3

Personal protective equipment:
Respiratory protection: required
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.

9. Physical and chemical properties
Form: solid
Colour: white
Odour: bitter almond-like
pH value
at 100 g/l water (20 C) ҳ 11.7
Melting temperature 563 C
Boiling temperature 1496 C
Ignition temperature not available
Flash point not available
Explosion limits lower not available
upper not available
Vapour pressure (20 C) 1.013 mbar
Density (20 C) 1.55 g/cm3
Solubility in water (20 C) 600 g/l
ethanol (20 C) sparingly soluble
Thermal decomposition > 1500 C

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

Substances to be avoided
acids , water , oxidizing agent , alkali salts , chlorates , nitrites , nitrates , carbon dioxide

Hazardous decomposition products
hydrogen cyanide

Further information
sensitive to moisture ; hygroscopic

11. Toxicological information
Acute toxicity
LD50 (oral, rat): 10 mg/kg

Further toxicological information

After eye contact: irritant effect After inhalation: dyspnoea , mucosal irritations , absorption
After skin contact: absorption Lethal effect after absorption. Decomposition of the substance with tissue moisture. Effect of the decomposition products. Highly toxic.
After swallowing: nausea , vomiting , absorption
Systemic effects: dyspnoea , respiratory paralysis , unconsciousness , cardiovascular disorders
The following applies to cyanogen compounds/ nitriles in general: utmost caution! Release of hydrocyanic acid is possible - blockade of cellular respiration. Cardiovascular disorders, dyspnoea, unconsciousness.

12. Ecological information
Behavior in environmental compartments:
Evaluation number (FRG) (mammal): 5.0 ; Evaluation number (FRG) (bacteria): 6.0 ; Evaluation number (FRG) (fish): 3.2 ;

Ecotoxic effects:
Biological effects: Toxic for aquatic organisms
Fish toxicity: L.idus LC0: 0.04 mg/l ; L.idus LC50: 0.07 mg/l ; L.idus LC100: 0.12 mg/l ;
Protozoa : E.sulcatum EC0: 1.8 mg/l ;
Daphnia toxicity: Daphnia EC0: 3.4 mg/l
Hazard for drinking water supplies. High aquatic toxicity. Forms toxic mixtures in water, dilution measures notwithstanding. Reacts with water to form toxic decomposition products.

Further ecologic data:
Do not allow to enter waters, waste water, or soil!

13. Disposal considerations
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.

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.

14. Transport information
Transport over land ADR/RID and GGVS/GGVE (Germany)
GGVS/GGVE class: 6.1 Number and letter: 41a
ADR/RID class: 6.1 Number and letter: 41a
Name of material: 1689 NATRIUMCYANID

River transport ADN/ADNR
not examined

Sea transport IMDG
IMDG class: 6.1 UN-No.: 1689 Packaging group: I
Ems: 6.1-04 MFAG: 215

Air transport ICAO-TI and IATA-DGR
ICAO/IATA class: 6.1 UN/ID-No.: 1689 Packaging group: I
Correct technical name: SODIUM CYANIDE

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.

15. Regulatory information
Labelling according to EC Directives
Symbol: T+ Very toxic immediately and show this container or label.
R-phrases: R 26/27/28-32 Very toxic by inhalation, in contact with skin and if swallowed. Contact with acids liberates very toxic gas.
S-phrases: S 1/2-7-28.1-29-45 Keep locked up and out of reach of children. Keep container tightly closed. After contact with skin, wash immediately with plenty of water. Do not empty into drains. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
EC-No.: 205-599-4 EC label

German regulations
Water pollution class 3 (highly polluting substance)

16. Other information
Reason for alteration
General update.