INTOX Home Page
DECABORANE ICSC: 0712
Date of Peer Review: October 1997

Boron hydride
Decaboron tetradecahydride
CAS # 17702-41-9 B10H14
RTECS # HD1400000 Molecular mass: 122.2
UN # 1868
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames. NO contact with halogenated compounds, oxidizers.
Special powder, dry sand, NO other agents.
EXPLOSION Above 80C explosive vapour/air mixtures may be formed. Finely dispersed particles form explosive mixtures in air.
Above 80C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water.
EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough. Dizziness. Drowsiness. Headache. Sweating. Nausea. Sore throat. Weakness. Tremors. Incoordination. Symptoms may be delayed (see Notes).
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin MAY BE ABSORBED! Redness. (See Inhalation).
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness.
Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (See Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: complete protective clothing including self-contained breathing apparatus.
Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 4.1
UN Subsidiary Risks: 6.1
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-41GFT2-II+III
NFPA Code: H3; F2; R1;
Fireproof. Separated from food and feedstuffs, halogens, and other oxidants. Cool. Dry.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
DECABORANE ICSC: 0712
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS, WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
May explode on heating or contact with flames. The substance decomposes slowly on heating to 300C to form boron and the flammable gas, hydrogen - see ICSC 0001, and on burning producing toxic fumes (boron oxides). Reacts slowly with halogenated materials and ethers to form impact-sensitive materials. Undergoes explosive reaction with oxidants. Reacts with water or moisture to form flammable gas (hydrogen - see ICSC 0001). Attacks natural rubber, some synthetic rubbers, some greases and some lubricants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.05 ppm as TWA, 0.15 ppm as STEL; (skin); (ACGIH 2004).
MAK: 0.05 ppm, 0.25 mg/m; Peak limitation category: II(2); skin absorption (H); (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The aerosol irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the central nervous system, resulting in fatigue, hyperexcitability and narcosis. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the central nervous system, resulting in fatigue, inability to concentrate and lack of coordination.
PHYSICAL PROPERTIES
Boiling point: 213C
Melting point: 99.6C
Relative density (water = 1): 0.9
Solubility in water: Slightly soluble in cold water; hydrolyses in hot water
Vapour pressure, Pa at 25C: 6.65
Relative vapour density (air = 1): 4.2 (at boiling point)
Relative density of the vapour/air-mixture at 20C (air = 1): 1.00
Flash point: 80C c.c.
Auto-ignition temperature: 149C
Explosive limits, vol% in air: see Notes
ENVIRONMENTAL DATA

NOTES
The onset of symtoms is frequently delayed for 24 to 48 hours after exposure. Explosive limits are unknown in literature. Reacts violently with fire extinguishing agents such as halons. The odour warning when the exposure limit value is exceeded is insufficient. Do NOT take working clothes home. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005