Safety data sheet for Benzene
CAS 71-43-2
This is the free preview of a draft SDS for Benzene — 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: Laboratory reference substance.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 71-43-2
- Molecular formula
- C6H6
- Molecular weight
- 78.11 g/mol
- Signal word
- Danger
Hazard classification
- GHS02 — Flammable
- GHS07 — Health hazard — irritant
- GHS08 — Serious health hazard
- H225: Highly flammable liquid and vapor.
- H304: May be fatal if swallowed and enters airways.
- H315: Causes skin irritation.
- H319: Causes serious eye irritation.
- H340: May cause genetic defects.
- H350: May cause cancer.
- H372: Causes damage to organs through prolonged or repeated exposure.
Section 1 — Identification
1.1 Product identifier
Product identifier: Benzene
Chemical name (IUPAC): benzene
CAS number: 71-43-2
PubChem CID reference: 241
Synonyms: benzene; benzol; Cyclohexatriene; benzole; Pyrobenzole; Benzine; Coal naphtha; Pyrobenzol; Benzen; Phene
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 this sheet resolves: Flam. Liq. 2, Asp. Tox. 1, Skin Irrit. 2, Eye Irrit. 2, Muta. 1B, Carc. 1A, STOT RE 1.
Classification: Flammable Liquid, Category 2 (Flam. Liq. 2) [H225]
Classification: Aspiration Hazard, Category 1 (Asp. Tox. 1) [H304]
Classification: Skin Irritation, Category 2 (Skin Irrit. 2) [H315]
Classification: Eye Irritation, Category 2 (Eye Irrit. 2) [H319]
Classification: Germ Cell Mutagenicity, Category 1B (Muta. 1B) [H340]
Classification: Carcinogenicity, Category 1A (Carc. 1A) [H350]
Classification: Specific Target Organ Toxicity, Repeated Exposure, Category 1 (STOT RE 1) [H372]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS02 (Flammable), GHS07 (Exclamation), GHS08 (Health Hazard)
Hazard statement: H225: Highly flammable liquid and vapor.
Hazard statement: H304: May be fatal if swallowed and enters airways.
Hazard statement: H315: Causes skin irritation.
Hazard statement: H319: Causes serious eye irritation.
Hazard statement: H340: May cause genetic defects.
Hazard statement: H350: May cause cancer.
Hazard statement: H372: Causes damage to organs through prolonged or repeated exposure.
Precautionary statement: P201: Obtain special instructions before use.
Precautionary statement: P202: Do not handle until all safety precautions have been read and understood.
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: P264: Wash hands thoroughly after handling.
Precautionary statement: P270: Do not eat, drink or smoke when using this product.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P301+P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor.
Precautionary statement: P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
Precautionary statement: P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
Precautionary statement: P308+P313: IF exposed or concerned: Get medical advice/attention.
Precautionary statement: P331: Do NOT induce vomiting.
Precautionary statement: P403+P235: Store in a well-ventilated place. Keep cool.
Precautionary statement: P405: Store locked up.
Precautionary statement: P501: Dispose of contents/container in accordance with local, regional, national, and international regulations.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Liquid
Appearance: Clear, colorless liquid
Odor: Aromatic odor
Boiling point: 80.1°C
Melting point: 5.5°C
Flash point: -11°C
Density: 0.879 g/cm³ at 20°C
Vapor pressure: 95.2 mmHg at 20°C
Water solubility: Slightly soluble (1.8 g/L at 25°C)
Log Pow (log Kow): 2.13
Vapor density: 2.77 (air = 1)
Lower explosive limit: 1.2%
Upper explosive limit: 8.0%
Auto-ignition temperature: 498°C (928°F)
Viscosity: 0.604 mPa.s at 25 °C
pH: Not available
Occupational exposure limits for Benzene
The airborne limits on public record in the United States. These are transcribed from the tables named in each row, not derived. The full draft puts them in Section 8 with the control and PPE guidance.
NIOSH REL — TWA (up to 10 h)
0.1 ppm
OSHA Annotated PEL Table Z-1 (NIOSH REL column)
NIOSH REL — STEL (15 min)
1 ppm
OSHA Annotated PEL Table Z-1 (NIOSH REL column)
Where each value came from
- Odor — Hazardous Substances Data Bank (HSDB)
- NIOSH. NIOSH Pocket Guide to Chemical Hazards. Department of Health & Human Services, Centers for Disease Control & Prevention. National Institute for Occupational Safety & Health. DHHS (NIOSH) Publication No. 2010-168 (2010). Available from: https://www.cdc.gov/niosh/npg
- View the record
- Boiling point — Hazardous Substances Data Bank (HSDB)
- Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton, FL: 2013-2014, p. 3-34
- View the record
- Melting point — Hazardous Substances Data Bank (HSDB)
- Same reference as boiling point above.
- View the record
- Flash point — Hazardous Substances Data Bank (HSDB)
- O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013, p. 188
- View the record
- Density — Hazardous Substances Data Bank (HSDB)
- Same reference as boiling point above.
- View the record
- Vapor pressure — Hazardous Substances Data Bank (HSDB)
- Daubert, T.E., R.P. Danner. Physical and Thermodynamic Properties of Pure Chemicals Data Compilation. Washington, D.C.: Taylor and Francis, 1989, p. 361
- View the record
- Log Pow (log Kow) — Hazardous Substances Data Bank (HSDB)
- Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995, p. 18
- View the record
- Lower explosive limit — Hazardous Substances Data Bank (HSDB)
- Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 11th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2004, p. 360
- View the record
- Auto-ignition temperature — Hazardous Substances Data Bank (HSDB)
- National Fire Protection Association; Fire Protection Guide to Hazardous Materials. 14th Edition, Quincy, MA 2010, p. 325-18
- View the record
- Viscosity — Hazardous Substances Data Bank (HSDB)
- Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton, FL: 2013-2014, p. 6-238
- View the record
A value with no row here was assembled from more than one record, so no single record is credited for it. The draft you buy carries this table as an appendix covering all 16 sections.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- Hazardous Substances Data Bank (HSDB)
- OSHA Annotated PEL Table Z-1 (NIOSH REL column)
- 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 Benzene, and where each one comes from
30 measured values for 12 properties, read from 4 public databases. On 4 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.
- 176 °F
- NIOSH Pocket Guide
- 80.09 °C @760 [mm Hg]
- PAC Chemical Database, U.S. Department of Energy
Melting point
4 records, 5 to 6 °C
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- 42 °F
- NIOSH Pocket Guide
Flash point
3 records agree
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 12 °F (-11 °C) Closed Cup
- Hazardous Substances Data Bank (HSDB)
- 12 °F
- NIOSH Pocket Guide
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
- 928 °F (498 °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 1.4%, upper 8.0%
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
4 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- 94.8 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 75 mmHg
- NIOSH Pocket Guide
- 75 [mm Hg] @20 °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.
- 2.8 (Air = 1)
- Hazardous Substances Data Bank (HSDB)
Density
4 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 0.8756 g/cu cm at 20 °C
- Hazardous Substances Data Bank (HSDB)
- 0.8765 @ 20°C
- PAC Chemical Database, U.S. Department of Energy
Solubility
4 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- In water, 1.79X10+3 mg/L at 25 °C
- Hazardous Substances Data Bank (HSDB)
- Miscible with alcohol, chloroform, ether, carbon disulfide, acetone, oils, carbon tetrachloride, and glacial acetic acid
- Hazardous Substances Data Bank (HSDB)
- Miscible with ethanol, ethyl ether, acetone, chloroform; coluble in carbon tetrachloride
- Hazardous Substances Data Bank (HSDB)
- 0.07%
- NIOSH Pocket Guide
Partition coefficient (log Kow)
1 record
Indicates whether the substance accumulates in fat or in water, which drives the environmental sections.
- log Kow = 2.13
- 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.
- 0.604 mPa.s at 25 °C
- Hazardous Substances Data Bank (HSDB)
Odour
1 record
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Aromatic odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Benzene, 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 Benzene
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