Tetrabutyl Ammonium Hydroxide 10% (liquid) – Product identifier
· Classification of the substance or mixture
H225: Highly flammable liquid and vapor.
H301: Toxic if swallowed.
H331: Toxic if inhaled.
H311: Toxic in contact with skin.
H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.
H370: Causes damage to organs.
Label elements
GHS label elements The product is classified and labeled according to the Globally Harmonized System (GHS).
Hazard pictograms
Signal word Danger
1 Identification
2 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Hazard(s) identification
Hazard statements
Highly flammable liquid and vapor.
Toxic if swallowed, in contact with skin or if inhaled.
Causes serious skin burns and eye damage.
Causes damage to organs (Eyes, central nervous system).
Precautionary statements
Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
Keep container tightly closed.
Wear protective gloves/protective clothing/eye protection/face protection.
If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove person to fresh air and keep comfortable for breathing.
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Immediately call a poison center/doctor. Specific treatment (see on this label).
Take off contaminated clothing and wash it before reuse. If skin irritation occurs: Get medical advice/attention.
In case of fire: Use CO2, powder or water spray to extinguish. Store in a well-ventilated place. Keep container tightly closed. Store in a well-ventilated place. Keep cool.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
Classification system:
NFPA ratings (scale 0 – 4)
Other hazards
Results of PBT and vPvB assessment
PBT: Not applicable.
vPvB: Not applicable.
3 Composition/information on ingredients
· Chemical characterization: Mixtures
·
Description: Mixture of the substances listed below with nonhazardous additions.
Description of first aid measures
General information: Immediately remove any clothing soiled by the product. Rinse skin with water/shower. Call physician immediately.
After inhalation: Fresh air, Immediately call a physician.
After skin contact: Immediately wash with water and soap and rinse thoroughly.
After eye contact: Rinse eyes for several minutes under running water. Then consult a doctor.
After swallowing: If symptoms persist consult doctor.
Most important symptoms and effects, both acute and delayed No further relevant information available.
Indication of any immediate medical attention and special treatment needed
No further relevant information available.
Extinguishing media
Suitable extinguishing agents:
Foam, Cabon dioxide (CO2), Dry Powder
Special hazards arising from the substance or mixture Carbon oxides, nitrogen oxides.
Advice for firefighters
Protective equipment: No special measures required.
Personal precautions, protective equipment and emergency procedures
Wear protective equipment. Keep unprotected persons away.
Environmental precautions:
Do not allow to enter drains.
Methods and material for containment and cleaning up:
Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust). Use neutralizing agent.
Dispose contaminated material as waste according to section 13. Ensure adequate ventilation.
Reference to other sections
See Section 7 for information on safe handling.
See Section 8 for information on personal protection equipment. See Section 13 for disposal information.
Protective Action Criteria for Chemicals
· Dangerous components:
CAS: 2052-49-5
Tetrabutylammonium Hydroxide
˃ = 0 – < 10 %
CAS: 67-56-1
Methanol
˃ = 80 – < 90 %
4 First-aid measures
5 Fire-fighting measures

6 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Accidental release measures
· PAC-1:
CAS: 2052-49-5
Tetrabutylammonium Hydroxide 30-Hydrate
1.2 mg/m³
Handling:
Precautions for safe handling
Work under hood.
Do not inhale.
Information about protection against explosions and fires:
Keep ignition sources away – Do not smoke. Conditions for safe storage, including any incompatibilities
Storage:
Requirements to be met by storerooms and receptacles: Store in a cool location.
Information about storage in one common storage facility: Not required.
Further information about storage conditions:
Keep receptacle tightly sealed.
Store in cool, dry conditions in well sealed receptacles.
Specific end use(s) No further relevant information available.
Additional information about design of technical systems: No further data; see section 7.
Control parameters
Components with limit values that require monitoring at the workplace:
The following constituent is the only constituent of the product which has a PEL, TLV or other recommended exposure limit.
At this time, the remaining constituent has no known exposure limits.
(Contd. on page 5)
· PAC-2:
CAS: 2052-49-5
Tetrabutylammonium Hydroxide
13 mg/m³
· PAC-3:
CAS: 2052-49-5
Tetrabutylammonium Hydroxide
79 mg/m³
7 Handling and storage
8 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Exposure controls/personal protection
·
Additional information: The lists that were valid during the creation were used as basis.
·
Exposure controls
·
Personal protective equipment:
·
General protective and hygienic measures:
Immediately remove all soiled and contaminated clothing.
Avoid contact with the skin.
Avoid contact with the eyes and skin.
· Breathing equipment:
In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use respiratory protective device that is independent of circulating air.
· Protection of hands:
The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.
Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the chemical mixture.
Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation
· Material of gloves
The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer. As the product is a preparation of several substances, the resistance of the glove material can not be calculated in advance and has therefore to be checked prior to the application.
· Penetration time of glove material
The exact break through time has to be found out by the manufacturer of the protective gloves and has to be observed.
· Eye protection:
·
Body protection: Protective work clothing
9 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Physical and chemical properties
·
Information on basic physical and chemical properties
·
General Information
·
Appearance:
Form: Solution
Color: Colourless
Odor: No data available.
·
Odor threshold: Not determined.
· pH-value: Not determined.

Reactivity Vapors may form explosive mixture in air.
Chemical stability: The product is chemically stable under standard ambient conditions.
Thermal decomposition / conditions to be avoided: No data available..
Possibility of hazardous reactions No dangerous reactions known.
Conditions to avoid Warming.
Incompatible materials: Acids, Oxidizing agents, Alkali metals, Strong acids, Acid chlorides.
Hazardous decomposition products: In the event of fire see section 5.
· Change in condition
Melting point/Melting range: Undetermined.
Boiling point/Boiling range: 100 – 102℃
· Flash point: 11 °C
· Flammability (solid, gaseous): Highly flammable.
· Auto igniting: Not determined.
· Decomposition temperature: Not determined.
· Ignition temperature: Product is not self igniting.
· Danger of explosion: No data available
· Vapor pressure at 20 °C (68 °F): No data available.
· Density at 25℃: 0.95 g/cm³
·
Relative density Not determined.
·
Vapor density Not determined.
·
Evaporation rate Not determined.
· Solubility in / Miscibility with
Water: No data available.
· Partition coefficient (n-octanol/water): Not determined.
· Viscosity:
Dynamic: Not determined.
Kinematic: Not determined.
· Other information No further relevant information available.
10 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Stability and reactivity

Information on toxicological effects
Acute toxicity:
Primary irritant effect:
on the skin: No data available.
on the eye: Mixture causes serious eye damage. Risk of blindness.
Sensitization: No sensitizing effects known.
Additional toxicological information:
The product shows the following dangers according to internally approved calculation methods for preparations: Irritant
Carcinogenic categories
Toxicity
Aquatic toxicity: No further relevant information available.
Persistence and degradability No further relevant information available.
Behavior in environmental systems:
Bioaccumulative potential No further relevant information available.
Mobility in soil No further relevant information available.
Additional ecological information:
General notes:
Water hazard class 1 (Self-assessment): slightly hazardous for water
Do not allow undiluted product or large quantities of it to reach ground water, water course or sewage system. Must not reach bodies of water or drainage ditch undiluted or unneutralized.
Results of PBT and vPvB assessment
PBT: Not applicable.
vPvB: Not applicable.
Other adverse effects No further relevant information available.
Waste treatment methods
Recommendation:
Must not be disposed of together with household garbage. Do not allow product to reach sewage system.
Uncleaned packagings:
Recommendation: Disposal must be made according to official regulations.
Recommended cleansing agent: Water, if necessary with cleansing agents.

11 Tetrabutyl Ammonium Hydroxide 10% (liquid) – Toxicological information
· IARC (International Agency for Research on Cancer)
None of the ingredients is listed.
· NTP (National Toxicology Program)
None of the ingredients is listed.
· OSHA-Ca (Occupational Safety & Health Administration)
None of the ingredients is listed.
12 Ecological information

13 Disposal considerations

14 Transport information
·
UN-Number
·
DOT, IMDG, IATA
UN3286
·
UN proper shipping name
·
DOT
Flammable liquids, n.o.s. (Methanol, Tetrabutyl Ammonium Hydroxide)
· IMDG, IATA
FLAMMABLE LIQUID, N.O.S.(METHANOL, TETRABUTYL AMMONIUM HYDROXIDE)
· Transport hazard class(es)
· DOT
O.
·
Class
·
Label
3 Flammable liquids
3
· IMDG, IATA
O.
· Class
3 Flammable liquids
· Label
3
·
Packing group
·
DOT, IMDG, IATA
II
·
Environmental hazards:
·
Marine pollutant:
No
·
Special precautions for user Warning: Flammable liquids
·
Hazard identification number (Kemler code):
·
EMS Number:
·
Stowage Category
· Transport in bulk according to Annex II of MARPOL73/78 and the IBC Code
Not applicable.
·
Transport/Additional information:
·
DOT
·
Quantity limitations
On passenger aircraft/rail: 5 L On cargo aircraft only: 60 L
·
IMDG
·
Limited quantities (LQ)
1L
· Excepted quantities (EQ)
Code: E2
Maximum net quantity per inner packaging: 30 ml
Maximum net quantity per outer packaging: 500 ml

· UN “Model Regulation”: FLAMMABLE LIQUID, N.O.S.(METHANOL, TETRABUTYL
AMMONIUM HYDROXIDE), 3, II

15 Regulatory information
· Safety, health and environmental regulations/legislation specific for the substance or mixture
No further relevant information available.
·
Sara
· Section 355 (extremely hazardous substances):
None of the ingredients is listed.
· Section 313 (Specific toxic chemical listings):
None of the ingredients is listed.
· TSCA (Toxic Substances Control Act):
Methanol
ACTIVE
Tetrabutylammonium Hydroxide
ACTIVE
· Hazardous Air Pollutants
None of the ingredients is listed.
·
Proposition 65
· Chemicals known to cause cancer:
None of the ingredients is listed.
· Chemicals known to cause reproductive toxicity for females:
None of the ingredients is listed.
· Chemicals known to cause reproductive toxicity for males:
None of the ingredients is listed.
· Chemicals known to cause developmental toxicity:
None of the ingredients is listed.
·
Carcinogenic categories
· EPA (Environmental Protection Agency)
None of the ingredients is listed.
· TLV (Threshold Limit Value)
None of the ingredients is listed.
· NIOSH-Ca (National Institute for Occupational Safety and Health)
None of the ingredients is listed.
·
GHS label elements The product is classified and labeled according to the Globally Harmonized System (GHS).
· Hazard pictograms
·
Signal word Danger
· Hazard statements
Highly flammable liquid and vapor.
Toxic if swallowed, in contact with skin or if inhaled.
Causes serious skin burns and eye damage.
Causes damage to organs (Eyes, central nervous system).
· Precautionary statements
·
Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
·
Keep container tightly closed.
·
Wear protective gloves/protective clothing/eye protection/face protection.
·
If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove person to fresh air and keep comfortable for breathing.
·
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
·
Immediately call a poison center/doctor. Specific treatment (see on this label).
·
Take off contaminated clothing and wash it before reuse. If skin irritation occurs: Get medical advice/attention.
·
In case of fire: Use CO2, powder or water spray to extinguish. Store in a well-ventilated place. Keep container tightly closed. Store in a well-ventilated place. Keep cool.
·
Store locked up.
·
Dispose of contents/container in accordance with local/regional/national/international regulations.
·
Chemical safety assessment: A Chemical Safety Assessment has not been carried out.
* 16 Other information
This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.
Department issuing SDS: Environment protection department.
Date of preparation / last revision
Creation date for SDS: 14/05/2024
Revision 1.0 07/03/2025: Reviewed SDS for accuracy. GW/STN