Safety data sheet for Oxalic acid
CAS 144-62-7
This is the free preview of a draft SDS for Oxalic 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: Rust and stain removal, wood bleaching.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 144-62-7
- Molecular formula
- C2H2O4
- Molecular weight
- 90.03 g/mol
- Signal word
- Danger
Hazard classification
- GHS05 — Corrosive
- GHS07 — Health hazard — irritant
- H302: Harmful if swallowed.
- H312: Harmful in contact with skin.
- H318: Causes serious eye damage.
Section 1 — Identification
1.1 Product identifier
Product identifier: Oxalic Acid
Chemical name (IUPAC): oxalic acid
CAS number: 144-62-7
PubChem CID reference: 971
Synonyms: oxalic acid; ethanedioic acid; Aktisal; Aquisal; Oxiric acid; Kyselina stavelova; Oxaalzuur; Oxalsaeure; Acidum oxalicum; Acide oxalique
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: Acute Tox. 4 (Oral), Acute Tox. 4 (Dermal), Eye Dam. 1.
Classification: Acute Toxicity, Category 4 — Oral (Acute Tox. 4 (Oral)) [H302]
Classification: Acute Toxicity, Category 4 — Dermal (Acute Tox. 4 (Dermal)) [H312]
Classification: Serious Eye Damage, Category 1 (Eye Dam. 1) [H318]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS05 (Corrosion), GHS07 (Exclamation)
Hazard statement: H302: Harmful if swallowed.
Hazard statement: H312: Harmful in contact with skin.
Hazard statement: H318: Causes serious eye damage.
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: P270: Do not eat, drink or smoke when using this product.
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: P302+P352: IF ON SKIN: Wash with plenty of water.
Precautionary statement: P301+P317: IF SWALLOWED: Get medical help.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Solid
Appearance: ORTHORHOMBIC, CRYSTALS BEING PYRAMIDAL OR ELONGATED OCTAHEDRA
Odor: Odorless
Melting point: 189.5°C (373°F)
Density: 1.90 @ 17 DEG/4 °C, ALPHA
Vapor pressure: 0 hPa at 20°C
Water solubility: Solubility in water, g/100ml at 20 °C: 9-10 (moderate)
Log Pow (log Kow): -0.81
Vapor density: 4.3 (air = 1)
Not found in the public records searched: boiling point, flash point, lower explosive limit, upper explosive limit, auto-ignition temperature, viscosity and pH. Enter these from your supplier's safety data sheet or your own test report before the draft is issued.
Occupational exposure limits for Oxalic acid
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.
OSHA PEL — TWA (8 h)
1 mg/m³
OSHA Annotated PEL Table Z-1
NIOSH REL — TWA (up to 10 h)
1 mg/m³
OSHA Annotated PEL Table Z-1 (NIOSH REL column)
NIOSH REL — STEL (15 min)
2 mg/m³
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. DHHS (NIOSH) Publication No. 94-116. Washington, D.C.: U.S. Government Printing Office, June 1994, p. 238
- View the record
- Melting point — Hazardous Substances Data Bank (HSDB)
- Budavari, S. (ed.). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 1989, p. 1093
- View the record
- Density — Hazardous Substances Data Bank (HSDB)
- Budavari, S. (ed.). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 1989, p. 693
- View the record
- Water solubility — Hazardous Substances Data Bank (HSDB)
- Same reference as melting point above.
- 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
- Hazardous Substances Data Bank (HSDB)
- OSHA Annotated PEL Table Z-1
- 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 Oxalic acid, and where each one comes from
17 measured values for 6 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.
Melting point
3 records, 102 to 190 °C
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- 189.5 °C (DECOMPOSES)
- Hazardous Substances Data Bank (HSDB)
- 215 °F (Sublimes)
- NIOSH Pocket Guide
Vapour pressure
4 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- 0.54 mm @ 105 °C
- Hazardous Substances Data Bank (HSDB)
- <0.001 mmHg
- NIOSH Pocket Guide
- <0.001 mmHg
- OSHA Occupational Chemical Database
- 0.54 [mm Hg] @105 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
1 record
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
Density
4 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 1.90 @ 17 DEG/4 °C, ALPHA
- Hazardous Substances Data Bank (HSDB)
Solubility
4 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- 100 G AQ SOLN SATURATED @ 15 °C CONTAINS 6.71 G; 100 G AQ SOLN SATURATED @ 20 °C CONTAINS 8.34 G; 100 G AQ SOLN SATURATED @ 25 °C CONTAINS 9.81 G
- Hazardous Substances Data Bank (HSDB)
- VERY SOL IN ETHANOL; SLIGHTLY SOL IN ETHER; INSOL IN BENZENE, CHLOROFORM, PETROLEUM ETHER
- Hazardous Substances Data Bank (HSDB)
- Water solubility of 220,000 mg/l 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.
These are the public records read for Oxalic 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 Oxalic 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.