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MATERIAL SAFETY DATA SHEETS

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MSDS No: 74-90-8
Date: 03/09/2001

SUPPLIER ADDRESS:6141 Easton Road, Bldg. 1
PO Box 310
Plumsteadville, PA 18949-0310
EMERGENCY PHONE NUMBER:(215) 766-8861

1. CHEMICAL PRODUCT

PRODUCT NAME:HYDROGEN CYANIDESYNONYMS:Hydrocyanic acid

2. COMPOSITION, INFORMATION ON INGREDIENTS
 
Exposure Limits (PPM)
Ingredient NameFormulaCAS #Concentration ACGIH TLV OSHA PEL MAC Other STEL
HYDROGEN CYANIDEHCN74-90-899+%NE10 c104.7 c
c = ceiling


Note: NE = NONE ESTABLISHEDS/A = SIMPLE ASPHYXIANT

3. HAZARD INDENTIFICATION

* * * EMERGENCY OVERVIEW * * *
Poisonous, flammable liquid and vapor.
May be fatal if inhaled.
Can cause irritation to eyes, skin, and respiratory tract.
Symptoms of exposure may be delayed.
Can form explosive mixtures with air.

POTENTIAL HEALTH EFFECTS

ROUTES OF ENTRY: Inhalation , Ingestion

ACUTE EFFECTS: Highly poisonous and fast acting. Overexposure may cause nausea, headache, dizziness, vomiting and weakness. Inhalation of high concentrations of vapors is harmful and may cause heart irregularites, unconsciousness or death.

CHRONIC EFFECTS: Dyspnea, ataxia, tremors, coma, cardiac abnormalities.

MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE: Central nervous system diseases.

OTHER EFFECTS OF OVEREXPORSURE: None

CARCINOGENICITY (US ONLY):
    NTP - No
    IARC MONOGRAPHS - No
    OSHA REGULATED - No
4. FIRST AID MEASURES

INHALATION: Immediately remove victim to fresh air. If breathing has stopped, give artificial respiration. If breathing is difficult, give oxygen.

EYE CONTACT: Immediately flush with copious amounts of water for at least 15 minutes.

SKIN CONTACT: Immediately flush with copious amounts of water for at least 15 minutes while removing contaminated clothing.

INGESTION: Never give anything by mouth to an unconscious person. Never induce vomiting or perform mouth-to-mouth respiration. Provide 100% oxygen as soon as possible.

IN EVENT OF EXPOSURE, CONSULT A PHYSICIAN

NOTE TO PHYSICIAN: None

5. FIRE FIGHTING MEASURES

FLASH POINT: -18 deg.C

AUTOIGNITION TEMPERATURE: 538 deg.C

FLAMMABLE LIMITS: Vol.%
    LOWER: 5.6
    UPPER: 40

EXTINGUISHING MEDIA: Allow to burn. Try to stop flow of gas if this can be done safely. Only acceptable extinguishing media are protein based foams with a nitrogen carrier.

SPECIAL FIRE FIGHTING INSTRUCTION AND EQUIPMENT: Wear self-contained breathing apparatus and full protective clothing. Keep fire exposed cylinders cool with water spray. If possible, stop the product flow.

HAZARDOUS COMBUSTION PRODUCTS: Toxic carbon monoxide may be given off during combustion.

UNUSUAL FIRE AND EXPLOSION HAZARDS: Severe when exposed to heat or flame. Extremely flammable.

6. ACCIDENTAL RELEASE MEASURES

CLEAN UP PROCEDURES: Remove leaking cylinder to exhaust hood or safe outdoor area if this can be done safely. Remove leaking cylinder to exhaust hood or safe outdoor area. Liquid spills should be diked or flushed with water spray.

SPECIALIZED EQUIPMENT: None

7. HANDLING AND STORAGE

PRECAUTIONS TO BE TAKEN IN HANDLING: Secure cylinder when using to protect from falling. Use suitable hand truck to move cylinders. Use only in a well-ventilated area.

PRECAUTIONS TO BE TAKEN IN STORAGE: Store in well ventilated areas. Keep valve protection cap on cylinders when not in use. Store away from heat, flame, and sparks.

8. EXPOSURE CONTROLS / PERSONAL PROTECTION

ENGINEERING CONTROLS: Provide adequate general and local exhaust ventilation to maintain concentration below exposure limits.

EYE / FACE PROTECTION: Face shield and Safety glasses . A safety shower and eyewash station should be readily available.

SKIN PROTECTION: Protective gloves.

RESPIRATORY PROTECTION: Use a self-contained breathing apparatus in case of emergency or non-routine use.

OTHER PROTECTIVE EQUIPMENT: Safety shoes when handling cylinders.

9. PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE: Colorless to slightly bluish.

ODOR: Bitter almond

PHYSICAL PRESSURE: Liquid

VAPOR PRESSURE: @ 20 deg.C: 620 torr

VAPOR DENSITY (AIR=1): .947

BOILING POINT (C): 29

SOLUBILITY IN WATER: 100%

SPECIFIC GRAVITY (H2O=1): @25 deg.C: 0.679

EVAPORATION RATE: (BuAC=1): >1.0

ODOR THRESHOLD: N/Av

10. STABILITY AND REACTIVITY

STABILITY: Stable under normal storage conditions.

CONDITIONS TO AVOID: Storage in poorly ventilated areas. Storage near a heat source. Sparks, flame, heat and other sources of ignition.

MATERIALS TO AVOID: Alkaline materials, water, mineral acid, sulfuric acid, oxidizers, and acetaldehyde.

HAZARDOUS POLYMERIZATION: May occur in alkaline conditions.

HAZARDOUS DECOMPOSITION: Toxic carbon monoxide and nitrogen oxides may be given off.

11. TOXICOLOGICAL INFORMATION

LETHAL CONCENTRATION (LC50): 140 ppm, Rat 1 hour

LETHAL DOSE 50 (LD50): N/Ap

TERATOGENICITY: N/Ap

REPRODUCTIVE EFFECTS: N/Ap

MUTAGENICITY: N/Ap

12. ECOLOGICAL INFORMATION

No adverse ecological effects are expected.

13. DISPOSAL CONSIDERATIONS

WASTE DISPOSAL METHOD: Dispose of non-refillable cylinders in accordance with federal, state and local regulations. Allow gas to vent slowly to atmosphere in an unconfined area or exhaust hood. If the cylinders are the refillable type, return cylinders to supplier with any valve outlet plugs or caps secured and valve protection caps in place. Residue can be neutralized with NaOH solutions.

14. TRANSPORT INFORMATION

CONCENTRATION: 99+%

DOT DESCRIPTION (US ONLY):

    PROPER SHIPPING NAME: Hydrogen cyanide
    HAZARD CLASS: 6.1 (poison), Packing Group I
    INDENTIFICATION NUMBER: UN1051
    REPORTABLE QUANTITIES: 10 lbs.
    LABELING: POISON, FLAMMABLE LIQUID

ADR / RID (EU Only): Class 6.1, 2

SPECIAL PRECAUTIONS: Cylinders should be transported in a secure upright position in a well ventilated truck.

15. REGULATORY INFORMATION

OSHA: Process Safety Management: Material is listed in appendix A of 29 CFR 1910.119 as highly hazardous chemical.

TSCA: Material is listed in TSCA inventory.

SARA: The threshold planning quantity for this material is 10 lb.

EU NUMBER: 200-821-6

NUMBER IN ANNEX 1 OF DIR 67/548: Material is listed in annex 1.

EU CLASSIFICATION: N/Av

R: 26/27/28

S: (1/2-)7/9-16-36/37-38-45

16. OTHER INFORMATION

OTHER PRECAUTIONS: Protect containers from physical damage. Do not deface cylinders or labels. Cylinders should be refilled by qualified producers of compressed gas. Shipment of a compressed gas cylinder which has not been filled by the owner or with his written consent is a violation of federal law (49 CFR).

ABBREVIATIONS: N/Ap - Not Applicable N/Av - Not Available SA - Simple Asphyxiant NE - None Established

DISCLAIMER: Information included in this document is given to the best of our knowledge, however, no warranty is made that the information is accurate or complete. We do not accept any responsibility for damages by the use of the document.

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