Synonyms: UN1404; Calcium dihydride
CAS No.: 7789-78-8
Molecular Weight: 42.09
Chemical Formula: CaH2
Product Codes:
J.T. Baker: E285
Mallinckrodt: E613
Ingredient CAS No Percent Hazardous --------------------------------------- ------------ ------------ --------- Calcium Hydride 7789-78-8 > 94% Yes
Emergency Overview
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DANGER! FLAMMABLE SOLID. WATER REACTIVE. CORROSIVE. HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CONTACT MAY CAUSE BURNS TO ALL BODY TISSUE.
J.T. Baker SAF-T-DATA(tm) Ratings (Provided here for your convenience)
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Health Rating: 2 - Moderate
Flammability Rating: 3 - Severe (Flammable)
Reactivity Rating: 3 - Severe (Water Reactive)
Contact Rating: 3 - Severe (Corrosive)
Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES; CLASS B EXTINGUISHER.
Storage Color Code: Red Stripe (Store Separately)
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Potential Health Effects
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Inhalation:
Inhalation produces damaging effects on the mucous membranes and upper respiratory tract. Symptoms may include irritation of the nose and throat, and labored breathing. May cause lung edema, a medical emergency.
Ingestion:
Corrosive due to release of caustic lime in digestive tract; also burns due to heat of hydrolysis. Can cause abdominal pain, nausea, vomiting, diarrhea.
Skin Contact:
Corrosive. Symptoms of redness, pain, and severe burn can occur.
Eye Contact:
Corrosive. Causes redness, pain; possible burns and damage to eye tissues.
Chronic Exposure:
No information found, but compound should be handled as a potential health hazard.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders or impaired respiratory function may be more susceptible to the effects of the substance.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Keep patient quiet in half upright position. Get medical attention immediately.
Ingestion:
If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Get medical attention immediately.
Skin Contact:
Wipe off excess material from skin then immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Get medical attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get medical attention immediately.
Note to Physician:
For severe exposures, monitor for delayed onset of pulmonary edema.
Fire:
Flammable solid, water reactive. Dangerous when wet. Can react violently with oxygen-containing substances. Releases flammable hydrogen at temperatures above 1250F, and also when in contact with moist air or oxygen, water, or steam.
Explosion:
Explosions may occur from heating the hydride itself, from reactions with oxidizing substances and from the release of hydrogen. Dust dispersed in air may present a dust explosion hazard.
Fire Extinguishing Media:
Use dry chemical, lime or dry sand. DO NOT use water, foam, carbon dioxide, or halon.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
Ventilate and evacuate area. Wear appropriate personal protective equipment as specified in Section 8. Allow only qualified personnel to handle the spill. Cover spilled material with dry sand, mix and transfer to an air-tight metal container for disposal. Disposal should be prompt to minimize possibility of hydrogen generation. Spills or reject material may be returned to supplier or sent to an approved waste disposal facility.
Do not use water, do not flush to the sewer.
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Isolate from any source of heat or ignition. Isolate from incompatible substances. Avoid dust formation and control ignition sources. Employ grounding, venting and explosion relief provisions in accord with accepted engineering practices in any process capable of generating dust and/or static electricity. Empty only into inert or non-flammable atmosphere. Emptying contents into a non-inert atmosphere where flammable vapors may be present could cause a flash fire or explosion due to electrostatic discharge. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Airborne Exposure Limits:
None established.
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved):
For conditions of use where exposure to the dust or mist is apparent, a full-face dust/mist respirator should be worn. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection:
Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact.
Eye Protection:
Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.
Appearance:
Gray granules or powder.
Odor:
Characteristic odor.
Solubility:
Decomposes in water.
Density:
1.7
pH:
Water solution alkaline (pH > 7).
% Volatiles by volume @ 21C (70F):
0
Boiling Point:
Not applicable.
Melting Point:
ca. 675C (ca. 1247F) Decomposes.
Vapor Density (Air=1):
1.4
Vapor Pressure (mm Hg):
No information found.
Evaporation Rate (BuAc=1):
No information found.
Stability:
Unstable. Strong reducing agent. Water reactive.
Hazardous Decomposition Products:
Hydrogen, caustic calcium oxide and calcium hydroxide.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Silver fluoride, other metal halogenates, tetrahydrofuran, and oxidants. Reacts violently with water, acids, lower alcohols, and heat to produce hydrogen gas and caustic calcium hydroxide. The hydrogen gas may be ignited by the heat of the reaction.
Conditions to Avoid:
Air, heat, flames, ignition sources and incompatibles.
No LD50/LC50 information found relating to normal routes of occupational exposure.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Calcium Hydride (7789-78-8) No No None
Environmental Fate:
No information found.
Environmental Toxicity:
No information found.
Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and sent to a RCRA approved waste facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.
Domestic (Land, D.O.T.)
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Proper Shipping Name: CALCIUM HYDRIDE
Hazard Class: 4.3
UN/NA: UN1404
Packing Group: I
Information reported for product/size: 100G
International (Water, I.M.O.)
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Proper Shipping Name: CALCIUM HYDRIDE
Hazard Class: 4.3
UN/NA: UN1404
Packing Group: I
Information reported for product/size: 100G
--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Calcium Hydride (7789-78-8) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Calcium Hydride (7789-78-8) Yes Yes No No
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Calcium Hydride (7789-78-8) No No No No
--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Calcium Hydride (7789-78-8) No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: No Fire: Yes Pressure: No
Reactivity: Yes (Pure / Solid)
Australian Hazchem Code: 4Y
Poison Schedule: None allocated.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR.
NFPA Ratings: Health: 3 Flammability: 2 Reactivity: 2 Other: Water reactive
Label Hazard Warning:
DANGER! FLAMMABLE SOLID. WATER REACTIVE. CORROSIVE. HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CONTACT MAY CAUSE BURNS TO ALL BODY TISSUE.
Label Precautions:
Do not get in eyes, on skin, or on clothing.
Do not breathe dust.
Use only with adequate ventilation.
Store in a tightly closed container.
Remove and wash contaminated clothing promptly.
Wash thoroughly after handling.
Do not allow contact with water, acids, or moisture.
Keep away from heat, sparks and flame.
Label First Aid:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. In case of contact, wipe off excess material from skin then immediately flush eyes or skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. In all cases get medical attention immediately.
Product Use:
Laboratory Reagent.
Revision Information:
No changes.
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Prepared by: Environmental Health & Safety
Phone Number: (314) 654-1600 (U.S.A.)