Lithium borohydride

0.66 @25 °C

Lithium borohydride appears as a white to grayish crystalline powder.

White to greyish solid; [CAMEO] White odorless powder; [Alfa Aesar MSDS]

Danger

H260 (60.3%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]；H261 (39%): In contact with water releases flammable gas [Danger Substances and mixtures which in contact with water, emit flammable gases]；H301 (97.8%): Toxic if swallowed [Danger Acute toxicity, oral]；H311 (75.7%): Toxic in contact with skin [Danger Acute toxicity, dermal]；H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]；H331 (75.7%): Toxic if inhaled [Danger Acute toxicity, inhalation]

P223, P231+P232, P260, P261, P262, P264, P270, P271, P280, P301+P316, P301+P330+P331, P302+P335+P334, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P361+P364, P363, P370+P378, P402+P404, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 136 reports by companies from 13 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Status: Active Update: 19-03-2020 https://echa.europa.eu/registration-dossier/-/registered-dossier/30781

Lithium tetrahydroborate: HSNO Approval: HSR004535 Approved with controls

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Dangerous When Wet

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard. (ERG, 2024)

· Produce flammable gases on contact with water.；· May ignite on contact with water or moist air.；· Some react vigorously or explosively on contact with water.；· May be ignited by heat, sparks or flames.；· May re-ignite after fire is extinguished.；· Some are transported in highly flammable liquids.；· Runoff may create fire or explosion hazard.

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)

· Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death.；· May produce corrosive solutions on contact with water.；· Fire will produce irritating, corrosive and/or toxic gases.；· Runoff from fire control or dilution water may cause environmental contamination.

Causes somnolence, convulsions, and ulceration or bleeding from the stomach in oral lethal-dose studies of mice; [RTECS] Decomposed by moist air; A strong reducing agent; Dangerous when wet; [Merck Index] May ignite if moistened with water; [CAMEO] Reacts violently with water evolving highly flammable gases; Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Toxic by ingestion, inhalation, and skin absorption; [Alfa Aesar MSDS]

1413 138

Metal Hydrides, Metal Alkyls, Metal Aryls, and Silanes

Strong Reducing Agent；Water-Reactive

LITHIUM BOROHYDRIDE is a strong reducing agent may be easily ignited and burns vigorously once ignited. The powder reacts on contact with water or acids to form hydrogen gas and corrosive products. Reaction with limited amounts of water or moisture may cause ignition after a delay [Gaylord, 1965, p. 22].

Lithium borohydride

UN1413

Div 4.3 Dangerous when wet material (49 eCFR § 173.124)

PG I: the degree of danger presented by the material is great；For more information about the packing group assignment, please visit 49 eCFR § 173

Likely to ignite when moistened with water [Lab. Gov. Chemist 1965].

Water-react. 1 (60.3%)；Water-react. 2 (39%)；Acute Tox. 3 (97.8%)；Acute Tox. 3 (75.7%)；Skin Corr. 1B (100%)；Acute Tox. 3 (75.7%)

Water-react. 1 (100%)；Acute Tox. 3 (100%)；Acute Tox. 3 (100%)；Skin Corr. 1B (100%)；Acute Tox. 3 (100%)

Flammable agents - 3rd degree, Reactive agents - 2nd degree

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；DO NOT USE WATER OR FOAM.；SMALL FIRE: Dry chemical, soda ash, lime or sand.；LARGE FIRE: DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn. If it can be done safely, move undamaged containers away from the area around the fire.；FIRE INVOLVING METALS OR POWDERS (ALUMINUM, LITHIUM, MAGNESIUM, ETC.): Use dry chemical, DRY sand, sodium chloride powder, graphite powder or class D extinguishers; in addition, for Lithium you may use Lith-X® powder or copper powder. Also, see ERG Guide 170.；FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.；· Keep unauthorized personnel away.；· Stay upwind, uphill and/or upstream.；· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.；· Do not touch or walk through spilled material.；· Stop leak if you can do it without risk.；· Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material.；· DO NOT GET WATER on spilled substance or inside containers.；Small Spill；· Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain.；· Dike for later disposal; do not apply water unless directed to do so.；Powder Spill；· Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry.；· DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；Refer to the "General First Aid" section. Specific First Aid: In case of contact with substance, wipe from skin immediately; flush skin or eyes with running water for at least 20 minutes. (ERG, 2024)

General First Aid:；· Call 911 or emergency medical service.；· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.；· Move victim to fresh air if it can be done safely.；· Administer oxygen if breathing is difficult.；· If victim is not breathing:；-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.；-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).；-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.；· Remove and isolate contaminated clothing and shoes.；· For minor skin contact, avoid spreading material on unaffected skin.；· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.；· For severe burns, immediate medical attention is required.；· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.；· Keep victim calm and warm.；· Keep victim under observation.；· For further assistance, contact your local Poison Control Center.；· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.；Specific First Aid:；· In case of contact with substance, wipe from skin immediately; flush skin or eyes with running water for at least 20 minutes.

· Wear positive pressure self-contained breathing apparatus (SCBA).；· Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.；· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. DO NOT GET WATER on spilled substance or inside containers.；SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Dike for later disposal; do not apply water unless directed to do so.；POWDER SPILL: Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. (ERG, 2024)

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.；LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).；FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Immediate precautionary measure；· Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.；Large Spill；· Consider initial downwind evacuation for at least 300 meters (1000 feet).；Fire；· If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

0.14 [mg/m3]

1.6 [mg/m3]

9.5 [mg/m3]

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:；Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)

· DO NOT USE WATER OR FOAM.；Small Fire；· Dry chemical, soda ash, lime or sand.；Large Fire；· DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn.；· If it can be done safely, move undamaged containers away from the area around the fire.；Fire Involving Metals or Powders (Aluminum, Lithium, Magnesium, etc.)；· Use dry chemical, DRY sand, sodium chloride powder, graphite powder or class D extinguishers; in addition, for Lithium you may use Lith-X® powder or copper powder. Also, see GUIDE 170.；Fire Involving Tanks, Rail Tank Cars or Highway Tanks；· Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.；· Do not get water inside containers.；· Cool containers with flooding quantities of water until well after fire is out.；· Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.；· ALWAYS stay away from tanks in direct contact with flames.

Neurotoxin - Other CNS neurotoxin；Dermatotoxin - Skin burns.；Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

LC50 (unspecified mammal species) = 80 mg/m3

Status: Active Update: 19-03-2020 https://echa.europa.eu/registration-dossier/-/registered-dossier/30781

Lithium tetrahydroborate: HSNO Approval: HSR004535 Approved with controls

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Used as a reducing agent and to determine carboxyl groups in peptides; [Merck Index]