Chemical Safety Data Sheet MSDS / SDS
POTASSIUM TRIETHYLBOROHYDRIDE
Revision Date:2026-03-21Revision Number:1
Product identifier
- Product name: POTASSIUM TRIETHYLBOROHYDRIDE
- CBnumber: CB4355308
- CAS: 22560-21-0
- EINECS Number: 245-077-3
- Synonyms: Potassium triethyL;potassium,triethylboranuide
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 010-86108875
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordDanger
P403+P235 Store in a well-ventilated place. Keep cool.
P402+P404 Store in a dry place. Store in a closed container.
P370+P378 In case of fire: Use … for extinction.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P231+P232 Handle under inert gas. Protect from moisture.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
Hazard statements
H351 Suspected of causing cancer
H335 May cause respiratory irritation
H314 Causes severe skin burns and eye damage
H302 Harmful if swallowed
H260 In contact with water releases flammable gases which may ignite spontaneously
H225 Highly Flammable liquid and vapour
Substance
- Product name: POTASSIUM TRIETHYLBOROHYDRIDE
- Synonyms: Potassium triethyL;potassium,triethylboranuide
- CAS: 22560-21-0
- EC number: 245-077-3
- MF: C6H16BK
- MW: 138.1
4.1 Description of first-aid measures
General adviceFirst aiders need to protect themselves. Show this material safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air. Call in physician.
In case of skin contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately.
In case of eye contact
After eye contact: rinse out with plenty of water. Immediately call in ophthalmologist.
Remove contact lenses.
If swallowed
Remove contact lenses.
After swallowing: make victim drink water (two glasses at most), avoid vomiting (risk of perforation). Call a physician immediately. Do not attempt to neutralise.
4.2 Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
4.3 Indication of any immediate medical attention and special treatment needed
No data available
4.4 Notes to physician
No data available
5.1 Extinguishing media
Suitable extinguishing mediaCarbon dioxide (CO2) Dry powder
Unsuitable extinguishing media
Water Foam
5.2 Special hazards arising from the substance or mixture
Carbon oxides
Borane/boron oxides
Potassium oxides
Combustible.
Pay attention to flashback.
Vapors are heavier than air and may spread along floors.
May not get in touch with: Water
Development of hazardous combustion gases or vapours possible in the event of fire.
Forms explosive mixtures with air at ambient temperatures.
Borane/boron oxides
Potassium oxides
Combustible.
Pay attention to flashback.
Vapors are heavier than air and may spread along floors.
May not get in touch with: Water
Development of hazardous combustion gases or vapours possible in the event of fire.
Forms explosive mixtures with air at ambient temperatures.
5.3 Advice for firefighters
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.
Remove container from danger zone and cool with water. Prevent fire extinguishing water from contaminating surface water or the ground water system.
Remove container from danger zone and cool with water. Prevent fire extinguishing water from contaminating surface water or the ground water system.
6.1 Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Do not breathe vapors, aerosols. Avoid substance contact. Ensure adequate ventilation. Keep away from heat and sources of ignition.
Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see section 8.
Evacuate the danger area, observe emergency procedures, consult an expert.
For personal protection see section 8.
6.2 Environmental precautions
Do not let product enter drains. Risk of explosion.
6.3 Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up carefully with liquid-absorbent material (e.g.
Chemizorb®). Dispose of properly. Clean up affected area.
Chemizorb®). Dispose of properly. Clean up affected area.
6.4 Reference to other sections
For disposal see section 13.
7.1 Precautions for safe handling
Advice on safe handlingWork under hood. Do not inhale substance/mixture. Avoid generation of vapours/aerosols.
Keep workplace dry. Do not allow product to come into contact with water.
Advice on protection against fire and explosion
Keep workplace dry. Do not allow product to come into contact with water.
Keep away from open flames, hot surfaces and sources of ignition.Take precautionary measures against static discharge.
Hygiene measures
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
For precautions see section 2.2.
For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditionsTightly closed. Keep away from heat and sources of ignition.
Never allow product to get in contact with water during storage.
Air and moisture sensitive. Store under inert gas. Test for peroxide formation periodically and before distillation.
Storage class
Never allow product to get in contact with water during storage.
Air and moisture sensitive. Store under inert gas. Test for peroxide formation periodically and before distillation.
Storage class (TRGS 510): 4.3: Hazardous materials, which set free flammable gases upon contact with water
8.1 Control parameters
Ingredients with workplace control parameters| ['Component', 'CAS-No.', 'Value', 'Control\nparameters', 'Basis'] | ['Tetrahydrofuran', '109-99-9', 'PC-TWA', '300 mg/m3', 'Occupational exposure limits for\nhazardous agents in the\nworkplace - Chemical\nhazardous agents.'] |
|---|
| ['Component', 'CAS-No.', 'Parameters', 'Value', 'Biological\nspecimen', 'Basis'] | ['Tetrahydrofuran', '109-99-9', 'Tetrahydrof\nuran', '2 mg/l', 'Urine', 'ACGIH -\nBiological\nExposure Indices\n(BEI)'] | ['', 'Remarks', 'End of shift (As soon as possible after exposure ceases)', None, None, None] |
|---|
8.2 Exposure controls
Appropriate engineering controlsImmediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Tightly fitting safety goggles
Skin protection
required
Body Protection
Flame retardant antistatic protective clothing.
Respiratory protection
required when vapours/aerosols are generated.
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Control of environmental exposure
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Do not let product enter drains. Risk of explosion.
Information on basic physicochemical properties
- a) Physical stateliquid
- b) ColorClear
- c) OdorNo data available
- d) Melting point/freezing pointNo data available
- e) Initial boiling point and boiling rangeNo data available
- f) Flammability (solid, gas)No data available
- g) Upper/lower flammability or explosive limitsNo data available
- h) Flash point-17 °C - closed cup
- i) Autoignition temperatureNo data available
- j) Decomposition temperatureNo data available
- k) pHNo data available
- l) ViscosityViscosity, kinematic: No data available
Viscosity, dynamic: No data available - m) Water solubilityNo data available
- n) Partition coefficient n-octanol/waterNo data available
- o) Vapor pressureNo data available
- p) Density0.902 g/mL at 25 °C
- Relative density0.902 g/mL at 25 °C
- q) Relative vapor densityNo data available
- r) Particle characteristicsNo data available
- s) Explosive propertiesNot classified as explosive.
- t) Oxidizing propertiesnone
- Solubilitysol THF, diethyl ether, benzene, toluene.
9.2 Other safety information
No data available
10.1 Chemical stability
sensitive to moisture
10.2 Possibility of hazardous reactions
No data available
10.3 Conditions to avoid
Warming.
Moisture.
Moisture.
10.4 Incompatible materials
Water, Oxidizing agents, Alcohols, Strong acids
10.5 Hazardous decomposition products
Reacts with water to form: - Hydrogen gas
Peroxides
In the event of fire: see section 5
Peroxides
In the event of fire: see section 5
11.1 Information on toxicological effects
Mixture Acute toxicityOral: No data available
Acute toxicity estimate Oral - 1,949 mg/kg (Calculation method)
Symptoms: If ingested, severe burns of the mouth and throat, as well as a danger of perforation of the esophagus and the stomach.
Symptoms: mucosal irritations, Cough, Shortness of breath, Possible damages:, damage of respiratory tract
Acute toxicity estimate Dermal - 2,952 mg/kg (Calculation method)
Skin corrosion/irritation
Acute toxicity estimate Oral - 1,949 mg/kg (Calculation method)
Symptoms: If ingested, severe burns of the mouth and throat, as well as a danger of perforation of the esophagus and the stomach.
Symptoms: mucosal irritations, Cough, Shortness of breath, Possible damages:, damage of respiratory tract
Acute toxicity estimate Dermal - 2,952 mg/kg (Calculation method)
Remarks: Mixture causes burns.
Serious eye damage/eye irritation
Remarks: Mixture causes serious eye damage.
Risk of blindness!
Respiratory or skin sensitization
Risk of blindness!
Classified based on available data. For more details, see section 2
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
Carcinogenicity
Evidence of a carcinogenic effect.
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Mixture may cause respiratory irritation.
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
11.2 Additional Information
Other dangerous properties can not be excluded.
This substance should be handled with particular care.
Handle in accordance with good industrial hygiene and safety practice.
Components Tetrahydrofuran
This substance should be handled with particular care.
Handle in accordance with good industrial hygiene and safety practice.
Acute toxicity
LD50 Oral - Rat - male and female - 1,650 mg/kg
Remarks: (ECHA)
Symptoms: Irritation of mucous membranes
LC50 Inhalation - Rat - male and female - 6 h - > 14.7 mg/l - vapor (US-EPA)
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Remarks: (ECHA)
Symptoms: Irritation of mucous membranes
LC50 Inhalation - Rat - male and female - 6 h - > 14.7 mg/l - vapor (US-EPA)
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Skin corrosion/irritation
Skin - Rabbit
Result: No skin irritation - 72 h (Draize Test)
Remarks: Repeated or prolonged exposure may cause skin irritation and dermatitis, due to degreasing properties of the product.
Result: No skin irritation - 72 h (Draize Test)
Remarks: Repeated or prolonged exposure may cause skin irritation and dermatitis, due to degreasing properties of the product.
Serious eye damage/eye irritation
Eyes - Rabbit
Result: Causes serious eye irritation.
Remarks: (IUCLID)
Remarks: Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Result: Causes serious eye irritation.
Remarks: (IUCLID)
Remarks: Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
Respiratory or skin sensitization
Local lymph node assay (LLNA) - Mouse
Result: negative (OECD Test Guideline 429)
Result: negative (OECD Test Guideline 429)
Germ cell mutagenicity
Test Type: Ames test
Test system: S. typhimurium
Result: negative
Test Type: In vitro mammalian cell gene mutation test
Test system: Chinese hamster ovary cells
Result: negative
Test Type: Chromosome aberration test in vitro
Test system: Chinese hamster ovary cells
Result: negative
Method: OECD Test Guideline 474
Species: Mouse - male and female - Red blood cells (erythrocytes)
Result: negative
Test system: S. typhimurium
Result: negative
Test Type: In vitro mammalian cell gene mutation test
Test system: Chinese hamster ovary cells
Result: negative
Test Type: Chromosome aberration test in vitro
Test system: Chinese hamster ovary cells
Result: negative
Method: OECD Test Guideline 474
Species: Mouse - male and female - Red blood cells (erythrocytes)
Result: negative
Carcinogenicity
Suspected of causing cancer.
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Inhalation - May cause respiratory irritation. - Central nervous system
Remarks: Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
May cause drowsiness or dizziness.
Acute oral toxicity - Irritation of mucous membranes
Specific target organ toxicity - repeated exposure Aspiration hazard
Remarks: Classified according to Regulation (EU) 1272/2008, Annex VI (Table 3.1/3.2)
May cause drowsiness or dizziness.
Acute oral toxicity - Irritation of mucous membranes
Classified based on available data. For more details, see section 2
Potassium triethylhydroborate Acute toxicity
Oral: No data available
Inhalation: No data available
Dermal: No data available
Skin corrosion/irritation
Inhalation: No data available
Dermal: No data available
Remarks: No data available
Serious eye damage/eye irritation
Classified based on available data. For more details, see section 2
Respiratory or skin sensitization
Classified based on available data. For more details, see section 2
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
Carcinogenicity
Classified based on available data. For more details, see section 2
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
12.1 Toxicity
MixtureNo data available
12.2 Persistence and degradability
No data available
12.3 Bioaccumulative potential
No data available
12.4 Mobility in soil
No data available
12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
12.6 Endocrine disrupting properties
No data available
12.7 Other adverse effects
No data available
Components Tetrahydrofuran
Toxicity to fish flow-through test LC50 - Pimephales promelas (fathead minnow) - 2,160 mg/l - 96 h (OECD Test Guideline 203)
Toxicity to daphnia static test EC50 - Daphnia magna (Water flea) - 3,485 mg/l - and other aquatic 48 h invertebrates (OECD Test Guideline 202)
Toxicity to flow-through test NOEC - Pimephales promelas (fathead fish(Chronic toxicity) minnow) - 216 mg/l - 33 d
Remarks: (ECHA)
Potassium triethylhydroborate
Toxicity to daphnia static test EC50 - Daphnia magna (Water flea) - 3,485 mg/l - and other aquatic 48 h invertebrates (OECD Test Guideline 202)
Toxicity to flow-through test NOEC - Pimephales promelas (fathead fish(Chronic toxicity) minnow) - 216 mg/l - 33 d
Remarks: (ECHA)
No data available
13.1 Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Offer surplus and non-recyclable solutions to a licensed disposal company.
14.1 UN number
ADR/RID: 3399
IMDG: 3399
IATA-DGR: 3399
IMDG: 3399
IATA-DGR: 3399
14.2 UN proper shipping name
ADR/RID: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (Potassium triethylhydroborate, Tetrahydrofuran)
IMDG: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (Potassium triethylhydroborate, Tetrahydrofuran)
IATA-DGR: Organometallic substance, liquid, water-reactive, flammable (Potassium triethylhydroborate, Tetrahydrofuran)
Passenger Aircraft: Not permitted for transport
IMDG: ORGANOMETALLIC SUBSTANCE, LIQUID, WATER-REACTIVE, FLAMMABLE (Potassium triethylhydroborate, Tetrahydrofuran)
IATA-DGR: Organometallic substance, liquid, water-reactive, flammable (Potassium triethylhydroborate, Tetrahydrofuran)
Passenger Aircraft: Not permitted for transport
14.3 Transport hazard class(es)
ADR/RID: 4.3 (3)
IMDG: 4.3 (3)
IATA-DGR: 4.3 (3)
IMDG: 4.3 (3)
IATA-DGR: 4.3 (3)
14.4 Packaging group
ADR/RID: I
IMDG: I
IATA-DGR: I
IMDG: I
IATA-DGR: I
14.5 Environmental hazards
ADR/RID: no
IMDG Marine pollutant: no
IATA-DGR: no
IMDG Marine pollutant: no
IATA-DGR: no
14.6 Special precautions for user
Based on chemical properties, choose appropriate tools and conditions of transport.
Transporting tools shall be equipped with appropriate and sufficient firefighting equipment and emergency leaking installations. If transporting by road, please go along the specified route.
Transporting tools shall be equipped with appropriate and sufficient firefighting equipment and emergency leaking installations. If transporting by road, please go along the specified route.
14.7 Incompatible materials
Water, Oxidizing agents, Alcohols, Strong acids
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
National regulatory information
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals : Listed
Other regulations
Please pay attention on the waste treatment should also comply with local regulations requirement.
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals : Listed
Other regulations
Please pay attention on the waste treatment should also comply with local regulations requirement.
Abbreviations and acronyms
CAS: Chemical Abstracts Service
TWA: Time-Weighted Average
STEL: Short-Term Exposure Limit
LD50: Lethal Dose 50%
LC50: Lethal Concentration 50%
EC50: Effective Concentration 50%
PEL: Permissible Exposure Limit
TLV: Threshold Limit Value
IMDG: International Maritime Dangerous Goods Code
IATA: International Air Transport Association
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
DOT: US Department of Transportation
NFPA: National Fire Protection Association
NIOSH: National Institute for Occupational Safety and Health
OSHA: Occupational Safety and Health Administration
TWA: Time-Weighted Average
STEL: Short-Term Exposure Limit
LD50: Lethal Dose 50%
LC50: Lethal Concentration 50%
EC50: Effective Concentration 50%
PEL: Permissible Exposure Limit
TLV: Threshold Limit Value
IMDG: International Maritime Dangerous Goods Code
IATA: International Air Transport Association
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
DOT: US Department of Transportation
NFPA: National Fire Protection Association
NIOSH: National Institute for Occupational Safety and Health
OSHA: Occupational Safety and Health Administration
Disclaimer:
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.