Safety data sheet for Lactic acid
CAS 50-21-5
This is the free preview of a draft SDS for Lactic acid — 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: Cosmetic exfoliant, food acidulant.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 50-21-5
- Molecular formula
- C3H6O3
- Molecular weight
- 90.08 g/mol
- Signal word
- Danger
Hazard classification
- GHS05 — Corrosive
- H314: Causes severe skin burns and eye damage.
Section 1 — Identification
1.1 Product identifier
Product identifier: Lactic Acid
Chemical name (IUPAC): 2-hydroxypropanoic acid
CAS number: 50-21-5
PubChem CID reference: 612
Synonyms: lactic acid; 2-hydroxypropanoic acid; DL-Lactic acid; 2-hydroxypropionic acid; Milk acid; Tonsillosan; Racemic lactic acid; Ordinary lactic acid; Acidum lacticum; Ethylidenelactic acid
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: Skin Corr. 1A.
Classification: Skin Corrosion, Category 1A (Skin Corr. 1A) [H314]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS05 (Corrosion)
Hazard statement: H314: Causes severe skin burns and eye damage.
Precautionary statement: P260: Do not breathe dust/fume/gas/mist/vapors/spray.
Precautionary statement: P264+P265: Wash hands thoroughly after handling. Do not touch eyes.
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: Liquid
Appearance: Crystals (melt at 16
Odor: Odorless
Boiling point: 122°C (252°F) at 20 hPa
Melting point: 16.8°C (62°F)
Flash point: 110°C (230°F) closed cup
Density: 1.206 g/cm³ at 21°C
Vapor pressure: 0.1 hPa at 25°C
Water solubility: Miscible
Log Pow (log Kow): -0.72
Viscosity: Viscosities of aqueous lactic acid at 25 °C: 1.042 mPa s (6.29 wt%), 1.752 mPa s (25.02 wt%), 4.68 mPa s (54.94 wt%), 36.9 mPa s (88.60 wt%)
pH: The pH of a 10 wt% aqueous solution of lactic acid is 1.75
Not found in the public records searched: vapor density, lower explosive limit, upper explosive limit and auto-ignition temperature. Enter these from your supplier's safety data sheet or your own test report before the draft is issued.
Where each value came from
- Odor — Hazardous Substances Data Bank (HSDB)
- Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007, p. 736
- View the record
- Boiling point — Hazardous Substances Data Bank (HSDB)
- Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton, FL: 2014-2015, p. 3-336
- View the record
- Melting 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. 990
- View the record
- Density — Hazardous Substances Data Bank (HSDB)
- Same reference as boiling point above.
- View the record
- Water solubility — Hazardous Substances Data Bank (HSDB)
- Same reference as odor above.
- 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. 6
- View the record
- Viscosity — Hazardous Substances Data Bank (HSDB)
- Starr JN, Westhoff G; Lactic Acid. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2016). New York, NY: John Wiley & Sons. Online Posting Date: 31 Jan 2014
- 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)
- 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 Lactic acid, and where each one comes from
15 measured values for 10 properties, read from 1 public database. On 1 property the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
1 record
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- 122 °C at 15 mm Hg
- Hazardous Substances Data Bank (HSDB)
Melting point
2 records, 17 to 53 °C
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- Crystals from acetic acid or chloroform; melting point = 53 °C; pK = 3.79 at 25 °C. /L-lactic acid/
- Hazardous Substances Data Bank (HSDB)
Flash point
1 record
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 113 °C (235 °F) - closed cup
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
1 record
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- 0.0813 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
Density
1 record
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 1.2060 g/cu cm at 21 °C
- Hazardous Substances Data Bank (HSDB)
Solubility
3 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- Completely soluble in water
- Hazardous Substances Data Bank (HSDB)
- Miscible with water
- Hazardous Substances Data Bank (HSDB)
- Miscible with glycerol
- 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 = -0.72
- 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.
- Viscosities of aqueous lactic acid at 25 °C: 1.042 mPa s (6.29 wt%), 1.752 mPa s (25.02 wt%), 4.68 mPa s (54.94 wt%), 36.9 mPa s (88.60 wt%)
- Hazardous Substances Data Bank (HSDB)
pH
1 record
Drives the skin and eye corrosion classification for solutions, alongside the corrosivity data.
- The pH of a 10 wt% aqueous solution of lactic acid is 1.75
- Hazardous Substances Data Bank (HSDB)
Odour
3 records, each a different case
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Weak unpleasant odor
- Hazardous Substances Data Bank (HSDB)
- Available forms have very slightly acrid odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Lactic acid, 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 Lactic acid
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.