Safety data sheet for Ammonia
CAS 7664-41-7
This is the free preview of a draft SDS for Ammonia — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Cleaning products, refrigeration, fertiliser.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 7664-41-7
- Molecular formula
- H3N
- Molecular weight
- 17.031 g/mol
- Signal word
- Danger
Hazard classification
- GHS02 — Flammable
- GHS04 — Gas under pressure
- GHS05 — Corrosive
- GHS06 — Acute toxicity
- GHS09 — Hazardous to the environment
- H221: Flammable gas.
- H280: Contains gas under pressure; may explode if heated.
- H314: Causes severe skin burns and eye damage.
- H331: Toxic if inhaled.
- H400: Very toxic to aquatic life.
Section 1 — Identification
1.1 Product identifier
Product identifier: Ammonia
Chemical name (IUPAC): azane
CAS number: 7664-41-7
PubChem CID reference: 222
Synonyms: ammonia; azane; Ammonia gas; Nitro-sil; Ammonia anhydrous; Ammonia, anhydrous; Anhydrous ammonia; Ammoniak; Liquid Ammonia; AM-Fol
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses: Laboratory reagent, industrial processing aid, formulation component, and internal product-stewardship review subject to supplier confirmation.
Uses advised against: Consumer, medical, food, or any other use not covered by the supplier's label, technical instructions, or exposure scenario.
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification basis: OSHA 29 CFR 1910.1200 Appendix A, aligned to the GHS Rev. 7 hazard classes.
Classification: Flammable Gas, Category 1B (Flam. Gas 1B) [H221]
Classification: Gas Under Pressure (Press. Gas) [H280]
Classification: Skin Corrosion, Category 1A (Skin Corr. 1A) [H314]
Classification: Acute Toxicity, Category 3 — Inhalation (Acute Tox. 3 (Inhalation)) [H331]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS02 (Flammable), GHS04 (Compressed Gas), GHS05 (Corrosion), GHS06 (Toxic), GHS09 (Environmental Hazard)
Hazard statement: H221: Flammable gas.
Hazard statement: H280: Contains gas under pressure; may explode if heated.
Hazard statement: H314: Causes severe skin burns and eye damage.
Hazard statement: H331: Toxic if inhaled.
Hazard statement: H400: Very toxic to aquatic life.
Precautionary statement: P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Precautionary statement: P260: Do not breathe dust/fume/gas/mist/vapors/spray.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P305+P354+P338: IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
Precautionary statement: P301+P330+P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
Precautionary statement: P302+P361+P354: IF ON SKIN: Take off Immediately all contaminated clothing. Immediately rinse with water for several minutes.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Gas
Appearance: Gas
Odor: Sharp, cloying, repellent
Boiling point: -33.4°C (-28°F) at 1013 hPa
Melting point: -77.7°C (-108°F)
Flash point: 132°C (270°F) closed cup
Density: Density of liquid: 0.6818 at -33.35 °C, 1 atm; 0.6585 at -15 °C, 2.332 atm; 0.6386 at 0 °C, 4.238 atm; 0.6175 at 15 °C, 7.188 atm; 0.5875 at 35 °C, 13.321 atm
Vapor pressure: 9999 hPa at 25°C
Water solubility: Solubility in water, g/100ml at 20 °C: 54
Log Pow (log Kow): -2.66
Vapor density: 0.6 (air = 1)
Lower explosive limit: Not available
Upper explosive limit: Not available
Auto-ignition temperature: 651°C (1204°F)
Viscosity: 0.26 cP
pH: Not available
9.2 Other information
Other information: Additional classification-supporting physical hazard data should be confirmed from the customer-specific product specification where required.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
- PubChem — transport information
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Ammonia, and where each one comes from
38 measured values for 13 properties, read from 4 public databases. On 3 properties the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
4 records agree
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- -33.35 °C at 760 mm Hg
- Hazardous Substances Data Bank (HSDB)
- -28 °F
- NIOSH Pocket Guide
- -33.3 °C @760 [mm Hg]
- PAC Chemical Database, U.S. Department of Energy
Melting point
4 records agree
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- -108 °F
- NIOSH Pocket Guide
- -107.9 °F
- OSHA Occupational Chemical Database
Flash point
1 record
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 132 °C (270 °F) - closed cup
- Hazardous Substances Data Bank (HSDB)
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
- 1204 °F (651 °C)
- Hazardous Substances Data Bank (HSDB)
Explosive limits
1 record
The vapour concentration range in air that will burn. Below the lower limit and above the upper limit it will not.
- Lower explosive limit: 13% by volume; Upper explosive limit: 28% by volume
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
5 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- Vapor pressure: 1 Pa at -139 °C, 10 Pa at -127 °C, 100 Pa at -112 °C; 1 kPa at -94.5 °C (solids); 10 kPa at -71.3 °C, 100 kPa at -33.6 °C (liquid)
- Hazardous Substances Data Bank (HSDB)
- 7500 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 8.5 atm
- NIOSH Pocket Guide
- 7600 [mm Hg] @25 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
2 records differ
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
- 0.5967 (Air = 1)
- Hazardous Substances Data Bank (HSDB)
Density
7 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 0.696 g/L (liquid)
- Hazardous Substances Data Bank (HSDB)
- Density of liquid: 0.6818 at -33.35 °C, 1 atm; 0.6585 at -15 °C, 2.332 atm; 0.6386 at 0 °C, 4.238 atm; 0.6175 at 15 °C, 7.188 atm; 0.5875 at 35 °C, 13.321 atm
- Hazardous Substances Data Bank (HSDB)
- Density of aqueous solutions at 20 °C/4 °C: 0.9939 (1%), 0.9811 (4%), 0.9651 (8%), 0.9362 (16%), 0.9229 (20%), 0.9101 (24%), 0.8980 (28%)
- Hazardous Substances Data Bank (HSDB)
- Density: 0.7710 g/L (gas); 0.89801 g/L at 20 °C (28% aqueous solution)
- Hazardous Substances Data Bank (HSDB)
- 0.60(relative gas density)
- NIOSH Pocket Guide
- 0.6818 at -28.03 °F
- OSHA Occupational Chemical Database
- 0.771 @25 °C
- PAC Chemical Database, U.S. Department of Energy
Solubility
6 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- In water, 4.82X10+5 mg/L at 24 °C
- Hazardous Substances Data Bank (HSDB)
- In water, 47% at 0 °C; 38% at 15 °C; 34% at 20 °C; 31% at 25 °C; 28% at 30 °C; 18% at 50 °C
- Hazardous Substances Data Bank (HSDB)
- Soluble in water forming alkaline solutions; soluble in oxygenated solvents
- Hazardous Substances Data Bank (HSDB)
- 15% in 95% alcohol at 20 °C; 11% in alcohol at 30 °C
- Hazardous Substances Data Bank (HSDB)
- For more Solubility (Complete) data for Ammonia (7 total), please visit the HSDB record page
- Hazardous Substances Data Bank (HSDB)
Partition coefficient (log Kow)
1 record
Indicates whether the substance accumulates in fat or in water, which drives the environmental sections.
- log Kow = -2.66 /estimate for ammonium hydroxide which is the form of ammonia in water/
- Hazardous Substances Data Bank (HSDB)
Viscosity
1 record
Governs how far a spill spreads and how fast it soaks into a surface or a sorbent.
- 0.475, 0.317, 0.276 and 0.255 cP at -69, -50, -40 and -33.5 °C, respectively
- Hazardous Substances Data Bank (HSDB)
pH
1 record
Drives the skin and eye corrosion classification for solutions, alongside the corrosivity data.
- pH of 1.0N aqueous solution 11.6; 0.1N aqueous solution 11.1; 0.01N aqueous solution 10.6
- Hazardous Substances Data Bank (HSDB)
Odour
4 records, each a different case
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Sharp, cloying, repellent
- Hazardous Substances Data Bank (HSDB)
- Pungent, suffocating odor
- Hazardous Substances Data Bank (HSDB)
- Sharp, intensely irritating odor
- Hazardous Substances Data Bank (HSDB)
- Very pungent odor (characteristic of drying urine)
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Ammonia, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Ammonia
The draft covers all 16 sections under OSHA 29 CFR 1910.1200 and GHS Rev. 7, or the CLP EC 1272/2008 layout for the EU. Each draft arrives as an editable .docx and a PDF with an appendix naming the source of each value, in about 60 seconds. $5 per document, no account.