MSDS Name:Beryllium oxide 99.99%
Synonym:Beryllium monoxide

EMERGENCY OVERVIEW
Toxic if swallowed. Very toxic by inhalation. Irritating to eyes, respiratory system and skin. May cause sensitization by skin contact. May cause cancer by inhalation. Toxic : danger of serious damage to health by prolonged exposure through inhalation.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Ingestion:
Harmful if swallowed. May cause irritation of the digestive tract.
Inhalation:
May be fatal if inhaled. Causes respiratory tract irritation.
Chronic:
Chronic beryllium disease, an immunologically mediated response occurring after a latent period ranging from a few weeks to many years, causes difficult breathing on exertion, weight loss, nonproductive cough, fatigue, chest pain, anorexia, and weakness.

Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container.

Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Storage:
Store in a cool, dry place.

Engineering Controls:
Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 1304-56-9: United Kingdom, WEL - TWA: (listed as beryllium compounds, n.o.s.
0.002 mg/m3 TWA (as Be) United Kingdom, WEL - STEL: (listed as beryllium compounds, n.o.s 0.006 mg/m3 STEL (as Be) United States OSHA: 2 ug/m3 TWA (listed under Beryllium compound n.o.s.).5 ??g/m3 Ceiling (listed under Beryllium compounds, n.o.s Belgium - TWA: (listed as beryllium compounds, n.o.s.): 0.002 mg/ VLE (as Be) France - VME: (listed as beryllium compounds, n.o.s.): 0.002 mg/m VME (as Be) Germany: (listed as beryllium compounds, n.o.s.): 0.002 mg/m3 VME Be) Japan: (listed as beryllium compounds, n.o.s.): 0.002 mg/m3 OEL ( Be) Malaysia: (listed as beryllium compounds, n.o.s.): 0.002 mg/m3 TW (as Be) Russia: (listed as beryllium compounds, n.o.s.): 0.001 mg/m3 TWA Be) Spain: 0.002 mg/m3 VLA-ED (as Be) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State: Pellets
Color: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 3900 deg F
Freezing/Melting Point: 2507 deg F
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Slightly soluble.
Specific Gravity/Density: 3.0100g/cm3
Molecular Formula: BeO
Molecular Weight: 25.00

Chemical Stability:
Not available.
Conditions to Avoid:
Not available.
Incompatibilities with Other Materials:
Not available.
Hazardous Decomposition Products:
Not available.
Hazardous Polymerization: Not available.

RTECS#:
CAS# 1304-56-9: DS4025000 LD50/LC50:
CAS# 1304-56-9: Oral, mouse: LD50 = 2062 mg/kg.
Carcinogenicity:
Beryllium oxide - California: carcinogen, initial date 10/1/87 (listed as Beryllium comp NTP: Known carcinogen (listed as Beryllium compounds, n.o.s.).
IARC: Group 1 carcinogen (listed as Beryllium compounds, n.o.s.) Other:
See actual entry in RTECS for complete information.

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
Shipping Name: BERYLLIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 1566
Packing Group: II
IMO
Shipping Name: BERYLLIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 1566
Packing Group: II
RID/ADR
Shipping Name: BERYLLIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 1566
Packing group: II

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+
Risk Phrases:
R 49 May cause cancer by inhalation.
R 25 Toxic if swallowed.
R 26 Very toxic by inhalation.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
R 43 May cause sensitization by skin contact.
R 48/23 Toxic : danger of serious damage to health
by prolonged exposure through inhalation.
Safety Phrases:
S 53 Avoid exposure - obtain special instructions
before use.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 1304-56-9: No information available.
Canada
CAS# 1304-56-9 is listed on Canadas NDSL List.
CAS# 1304-56-9 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1304-56-9 is listed on the TSCA inventory.