Substance profile
Butylamine
Butylamine is a clear, colorless liquid with an amine odor.
01 · Identification
What Butylamine is
Butylamine is a clear, colorless liquid with an amine odor. Its molecular formula is C4H11N and its molecular weight is 73.14 g/mol. It boils at 78 °C, melts at -50 °C, is miscible with water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
Butylamine identifiers and molecular data
Butylamine CAS number and EC number
Butylamine molecular formula and molecular weight
03 · GHS classification
Butylamine hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Butylamine pictograms and signal word
Butylamine hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Butylamine hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
This page lists only the codes assigned to Butylamine. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Butylamine
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Butylamine issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Butylamine precautionary statements
CLP Annex VI assigns 17 precautionary statements to Butylamine. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Butylamine name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | бутиламин |
| Spanish español | Butilamina |
| Czech čeština | butylamin |
| Danish dansk | butylamin |
| German Deutsch | Butylamin 1-Aminobutan |
| Estonian eesti | butüülamiin |
| Greek ελληνικά | βουτυλαμίνη |
| English English | butylamine |
| French français | butylamine |
| Croatian hrvatski | butilamin |
| Italian italiano | butilamina |
| Latvian latviešu | butilamīns |
| Lithuanian lietuvių | butilaminas |
| Hungarian magyar | butilamin |
| Maltese Malti | butilammina |
| Dutch Nederlands | butylamine |
| Polish polski | butyloamina |
| Portuguese português | butilamina |
| Romanian română | butilamină |
| Slovak slovenčina | butylamín |
| Slovenian slovenščina | butilamin |
| Finnish suomi | butyyliamiini |
| Swedish svenska | butylamin |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Butylamine GHS label elements
Everything CLP Annex VI fixes for Butylamine, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Butylamine
- Highly flammable liquid and vapour.
- Harmful if inhaled.
- Harmful in contact with skin.
- Harmful if swallowed.
- Causes severe skin burns and eye damage.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Do NOT induce vomiting.
- Wash with plenty of water/…
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Butylamine in the GHS label constructor →
07 · Health hazards
Butylamine health hazards and exposure limits
Butylamine hazard summary
Liquid will burn skin; [CHRIS] Highly corrosive to skin; [Quick CPC] n-Butylamine can cause severe skin and eye burns as well as respiratory tract irritation and, potentially, pulmonary edema. [ACGIH] A corrosive substance that can cause pulmonary edema; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Butylamine occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 5 ppm (15 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | C 5 ppm (15 mg/m3) [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 5 ppm (15 mg/m³) [15 minutes] | Occupational Safety and Health Administration (OSHA) |
| REL | C 5 ppm (15 mg/m3) [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 300 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 300.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 300 ppm | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Butylamine properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Butylamine boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 78 °C (172.4 °F) | HSDB | |
| 77.78 °C (172 °F) | NIOSH | ||
| 78 °C (172.4 °F) | at 760 mmHg | CAMEO |
Butylamine melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -50 °C (-58 °F) | HSDB |
Butylamine density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.74 g/cm³ | NIOSH | |
| 0.741 g/cm³ | at 20 °C | CAMEO | |
| 0.7327 g/cm³ | at 25 °C | HSDB |
Butylamine solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Miscible with alcohol, ether | HSDB | |
| Miscible | NIOSH | ||
| In water, 1X10+6 mg/L (miscible) at 25 °C | at 25 °C | HSDB |
Butylamine vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 82 mmHg | NIOSH | |
| 72 mmHg | at 20 °C | CAMEO | |
| 92.9 mmHg | at 25 °C | HSDB |
Butylamine flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | -1.11 °C (30 °F) | HSDB | |
| -12 °C (10.4 °F) | HSDB | ||
| -12.22 °C (10 °F) | NIOSH |
Butylamine autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 312.22 °C (594 °F) | HSDB | |
| 312 °C (593.6 °F) | ICSC |
Butylamine lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.7 % by volume | HSDB |
Butylamine upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 9.8 % by volume | HSDB |
Butylamine vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 2.5 (air = 1) | HSDB | |
| 2.52 (air = 1) | CAMEO |
Butylamine odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odor Threshold Low: 0.08 [ppm] | Haz-Map |
Butylamine critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 251.11 °C (484 °F) | HSDB | |
| 258.75 °C (497.8 °F) | HSDB |
Butylamine corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | It may corrode some metals in the presence of water. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Butylamine fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Butylamine fire potential
Flammable
Source: Hazardous Substances Data Bank (HSDB)
Odor
Water odor threshold: 6.2 mg/L. Air odor threshold: 1.8 uL/L. Odor safety class: C. C = odor safety factor 1-26. Less than 50% of distracted persons perceive warning of TLV.
Source: HSDB
The odor of butylamine is slight at less than 1 ppm, noticeable at 2 ppm, moderately strong at 2 to 5 ppm, strong at 5 to 10 ppm, & strong & irritating at concentrations exceeding 10 ppm. ... concentrations of 10 to 25 ppm are unpleasant to intolerable for more than a few minutes.
Source: HSDB
10 · Handling and storage
Butylamine storage and handling
Butylamine safe storage
Fireproof. Separated from food and feedstuffs. See Chemical Dangers.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Butylamine storage conditions
Store in closed containers in a cool, dry, well-ventilated area.
Source: Hazardous Substances Data Bank (HSDB)
Butylamine incompatible materials
Forms explosive mixture with air. May accumulate static electrical charges, and may cause ignition of its vapors. n-Butylamine is a weak base; reacts with strong oxidizers and acids causing fire and explosion hazard. Incompatible with organic anhydrides, isocyanates, vinyl acetate, acrylates, substituted allyls, alkylene oxides, epichlorohydrin, ketones, aldehydes, alcohols, glycols, phenols, cresols, caprolactum solution. Attacks some metals in presence of moitsure. /Butyl Amines/
Source: Hazardous Substances Data Bank (HSDB)
Butylamine reactivity
N-BUTYLAMINE reacts violently with strong oxidizing agents and acids. Attacks copper and copper compounds [Handling Chemicals Safely 1980 p. 123]. Reacts with hypochlorites to give N-chloroamines which may be explosive when isolated [Bretherick 1979 p. 108].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Butylamine in the storage compatibility matrix →
11 · Questions
Butylamine — frequently asked questions
What is the CAS number of Butylamine?
The CAS number of Butylamine is 109-73-9. Its EC number is 203-699-2.
What is the chemical formula of Butylamine?
The molecular formula of Butylamine is C4H11N and its molecular weight is 73.14 g/mol.
What does a Butylamine label have to show?
Under CLP Annex VI the label for Butylamine carries the pictograms Flame, Corrosion and Exclamation mark and the signal word is Danger.
Is Butylamine flammable?
Yes. CLP Annex VI assigns Butylamine H225 — highly flammable liquid and vapour. The flash point reported for it is -1.11 °C (30 °F) (HSDB).
Is Butylamine a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Butylamine. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Butylamine?
The US occupational exposure limit reported for Butylamine is 5 ppm (15 mg/m³) (Occupational Safety and Health Administration (OSHA)). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Butylamine?
The boiling point reported for Butylamine is 78 °C (172.4 °F) (HSDB).
What is the melting point of Butylamine?
The melting point reported for Butylamine is -50 °C (-58 °F) (HSDB).
How should Butylamine be stored?
CLP Annex VI assigns Butylamine the storage statement P403. Store in closed containers in a cool, dry, well-ventilated area. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Butylamine
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