SAFETY DATA SHEET
Maleic Acid
1. IDENTIFICATION
Product Identifiers
Product Name:
Maleic Acid
Other Names:
N/A
Product Number(s):
C152
CAS Number:
110-16-7
Recommended use of the chemical and restriction on use
Laboratory use.
Company Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
Emergency Contact Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
11 Carlton Street
KIRWAN QLD 4817
Australia(07) 4773 9444www.proscitech.com
2. HAZARDS IDENTIFICATION
Classification of the substance or mixture
Acute toxicity, Oral (Category 4), H302
Acute toxicity, Dermal (Category 4), H312
Skin corrosion/irritation (Sub-category 1B), H314
Serious eye damage/eye irritation (Category 1), H318
Skin sensitisation (Category 1), H317
Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335
Acute toxicity, Dermal (Category 4), H312
Skin corrosion/irritation (Sub-category 1B), H314
Serious eye damage/eye irritation (Category 1), H318
Skin sensitisation (Category 1), H317
Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335
Label Elements
Signal Words
Warning
Hazard Statement(s)
H302 + H312 Harmful if swallowed or in contact with skin.
H314 Causes severe skin burns and eye damage.
H317 May cause an allergic skin reaction.
H335 May cause respiratory irritation.
H314 Causes severe skin burns and eye damage.
H317 May cause an allergic skin reaction.
H335 May cause respiratory irritation.
Precautionary Statement(s)
Prevention
P260 Do not breathe dust.
P264 Wash skin thoroughly after handling.
P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
Response
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P304 + P340 + P310 IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/ doctor.
P333 + P313 If skin irritation or rash occurs: Get medical advice/ attention.
P362 + P364 Take off contaminated clothing and wash it before reuse.
Storage
P403 + P233 Store in a well-ventilated place. Keep container tightly closed.
P260 Do not breathe dust.
P264 Wash skin thoroughly after handling.
P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
Response
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P304 + P340 + P310 IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/ doctor.
P333 + P313 If skin irritation or rash occurs: Get medical advice/ attention.
P362 + P364 Take off contaminated clothing and wash it before reuse.
Storage
P403 + P233 Store in a well-ventilated place. Keep container tightly closed.
Primary route(s) of entry
1. Inhalation (Breathing)
2. Ingestion (Swallowing)
3. Skin Contact (Dermal Absorption)
2. Ingestion (Swallowing)
3. Skin Contact (Dermal Absorption)
Human Health
Inhalation:
Supply fresh air and to be sure call for a doctor.
In case of unconsciousness place patient stably in side position for transportation.
In case of unconsciousness place patient stably in side position for transportation.
Ingestion:
Rinse mouth. Do NOT induce vomiting.
Immediately call a doctor.
Immediately call a doctor.
Eyes:
Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.
Skin:
Take off immediately all contaminated clothing.Immediately wash with water and soap and rinse thoroughly.
Environment
Store in a well-ventilated place. Keep container tightly closed.
3. COMPOSITION/INFORMATION ON INGREDIENTS
Name
CAS No.
Content (w/w)
Classification
Maleic Acid
110-16-7
<= 100 %
Acute Tox. 4; Skin Corr./Irrit. 1B; Eye Dam./Irrit. 1; Skin Sens. 1; STOT SE 3; H302, H312, H314, H318, H317, H335
4. FIRST AID MEASURES
Ingestion
After swallowing: make victim drink water (two glasses at most), avoid vomiting (risk of
perforation). Call a physician immediately. Do not attempt to neutralise.
perforation). Call a physician immediately. Do not attempt to neutralise.
Inhalation
Supply fresh air and to be sure call for a doctor.
In case of unconsciousness place patient stably in side position for transportation.
In case of unconsciousness place patient stably in side position for transportation.
Skin Contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately.
Eye Contact
Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.
Other Information
Symptoms of poisoning may even occur after several hours; therefore medical observation for at least 48 hours after the accident.
5. FIREFIGHTING MEASURES
Suitable extinguishing equipment
CO₂, extinguishing powder or water spray. Fight larger fires with water spray or alcohol resistant foam.
HAZCHEM
Carbon oxides
Combustible.
Development of hazardous combustion gases or vapours possible in the event of fire.
Combustible.
Development of hazardous combustion gases or vapours possible in the event of fire.
Special protective equipment and precautions for fire fighters
Prevent fire extinguishing water from contaminating surface water or the ground water system.
6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Avoid inhalation of dusts. Avoid substance contact.
Ensure adequate ventilation. Evacuate the danger area, observe emergency procedures,
consult an expert.
Ensure adequate ventilation. Evacuate the danger area, observe emergency procedures,
consult an expert.
Environmental precautions
Do not allow to enter sewers/ surface or ground water.
Methods and materials for containment and clean up
Dispose contaminated material as waste according to item 13.
Ensure adequate ventilation.
Ensure adequate ventilation.
7. HANDLING AND STORAGE
Precautions for safe handling
Work under hood. Do not inhale substance/mixture.
Conditions for safe storage
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up dry. Dispose of properly. Clean up affected area. Avoid generation of dusts.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Exposure Standards
Engineering controls
Contains no substances with occupational exposure limit values.
Personal protective equipment
Eye and face protection
Avoid contact with the eyes. Use equipment for eye protection tested and approved under appropriate government standards.
Tightly sealed goggles.
Tightly sealed goggles.
Skin protection
Avoid contact with the skin. Protective gloves.
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell,
Internet: www.kcl.de).
Full contact
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:KCL 741 Dermatril® L
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell,
Internet: www.kcl.de).
Full contact
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:KCL 741 Dermatril® L
Body protection
Acid-resistant protective clothing
Immediately remove all soiled and contaminated clothing.
Wash hands before breaks and at the end of work.
Immediately remove all soiled and contaminated clothing.
Wash hands before breaks and at the end of work.
Respiratory protection
In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use self-contained respiratory protective device.
9. PHYSICAL AND CHEMICAL PROPERTIES
General information
Appearance
white powder Solid
Odour
slightly sourish
pH
Not applicable.
Vapour Pressure
Not applicable.
Density
1.59 g/cm³
Boiling Point
160 °C
Melting Point
144 - 145 °C
Solubility
Miscibility with Water at 20 °C 788 g/l
Specific Gravity of Density
Not determined.
Flash Point
Not applicable.
Flammable (Explosive) Limits
Product is not flammable.
Ignition Temperature
Not determined.
Formula
HOOC-CH=CH-COOH, (C₄H₄O₄)
10. STABILITY AND REACTIVITY
Reactivity
No further relevant information available.
Chemical stability
Not available.
Possibility of hazardous reactions
No dangerous reactions known.
Conditions to avoid
No further relevant information available.
Incompatible materials
No further relevant information available.
11. TOXICOLOGICAL INFORMATION
Acute effects
Symptoms of poisoning may even occur after several hours; therefore medical observation for at least 48 hours after the accident.
Eye contact
Irritating effect.
Skin contact
Irritant to skin and mucous membranes.
Ingestion
LD/LC50 values relevant for classification:
Oral LD50 708 mg/kg (rat)
Dermal LD50 1560 mg/kg (rabbit)
Oral LD50 708 mg/kg (rat)
Dermal LD50 1560 mg/kg (rabbit)
Inhalation
No further relevant information available.
Toxicity and irritation
No further relevant information available.
12. ECOLOGICAL INFORMATION
Ecotoxicity
No further relevant information available.
Persistence and degradability
No further relevant information available.
Bioaccumulative potential
No further relevant information available.
Other adverse effects
Water hazard class 1 (German Regulation) (Assessment by list): slightly hazardous for water Do not allow undiluted product or large quantities of it to reach ground water, water course or sewage system.
13. DISPOSAL CONSIDERATIONS
General information
Must not be disposed together with household garbage. Do not allow product to reach sewage system.
Disposal must be made according to official regulations. Recommended cleansing agents: Water, if necessary together with cleansing agents.
Disposal must be made according to official regulations. Recommended cleansing agents: Water, if necessary together with cleansing agents.
14. TRANSPORT INFORMATION
ADG label required
HAZCHEM
Carbon oxides
Combustible.
Development of hazardous combustion gases or vapours possible in the event of fire.
Combustible.
Development of hazardous combustion gases or vapours possible in the event of fire.
UN Number
UN1759
Proper shipping name
1759 CORROSIVE SOLID, N.O.S. (MALEIC ACID)
Transport hazard class
8
Packing group
PG III
Environmental hazard
No
Special precautions for users
Warning: Corrosive substances.
Additional information
5 kg
Excepted quantities (EQ)
Code: E1
Maximum net quantity per inner packaging: 30 g
Maximum net quantity per outer packaging: 1000 g ·
Transport category 3
Excepted quantities (EQ)
Code: E1
Maximum net quantity per inner packaging: 30 g
Maximum net quantity per outer packaging: 1000 g ·
Transport category 3
15. REGULATORY INFORMATION
Poisons Schedule Number
Substance is not listed.
Other Information
No further relevant information available.
16. OTHER INFORMATION
SDS preparation date
16 March 2026
Comments
Abbreviations and acronyms:
ADR: Accord relatif au transport international des marchandises dangereuses par route (European Agreement Concerning the International
Carriage of Dangerous Goods by Road)
IMDG: International Maritime Code for Dangerous Goods
DOT: US Department of Transportation
IATA: International Air Transport Association
EINECS: European Inventory of Existing Commercial Chemical Substances
CAS: Chemical Abstracts Service (division of the American Chemical Society)
NFPA: National Fire Protection Association (USA)
HMIS: Hazardous Materials Identification System (USA)
LC50: Lethal concentration, 50 percent
LD50: Lethal dose, 50 percent
PBT: Persistent, Bioaccumulative and Toxic
vPvB: very Persistent and very Bioaccumulative
NIOSH: National Institute for Occupational Safety
OSHA: Occupational Safety Health
TLV: Threshold Limit Value
PEL: Permissible Exposure Limit
REL: Recommended Exposure Limit
Acute toxicity - oral 4: Acute toxicity - Category 4
Skin irritation 2: Skin corrosion/irritation - Category 2
Eye irritation 2A: Serious eye damage/eye irritation - Category 2A
Sensitization - skin 1: Skin sensitisation - Category 1
Specific target organ toxicity (single exposure) 3: Specific target organ toxicity (single exposure) - Category 3
ADR: Accord relatif au transport international des marchandises dangereuses par route (European Agreement Concerning the International
Carriage of Dangerous Goods by Road)
IMDG: International Maritime Code for Dangerous Goods
DOT: US Department of Transportation
IATA: International Air Transport Association
EINECS: European Inventory of Existing Commercial Chemical Substances
CAS: Chemical Abstracts Service (division of the American Chemical Society)
NFPA: National Fire Protection Association (USA)
HMIS: Hazardous Materials Identification System (USA)
LC50: Lethal concentration, 50 percent
LD50: Lethal dose, 50 percent
PBT: Persistent, Bioaccumulative and Toxic
vPvB: very Persistent and very Bioaccumulative
NIOSH: National Institute for Occupational Safety
OSHA: Occupational Safety Health
TLV: Threshold Limit Value
PEL: Permissible Exposure Limit
REL: Recommended Exposure Limit
Acute toxicity - oral 4: Acute toxicity - Category 4
Skin irritation 2: Skin corrosion/irritation - Category 2
Eye irritation 2A: Serious eye damage/eye irritation - Category 2A
Sensitization - skin 1: Skin sensitisation - Category 1
Specific target organ toxicity (single exposure) 3: Specific target organ toxicity (single exposure) - Category 3
References
EMS SDS "MALEIC ACID" 05/05/2025 https://www.emsdiasum.com/docs/technical/msds/18150.pdf
Sigma-Aldrich SDS "Maleic Acid, electronic grade, >=99.97% trace metal basis, water <=350 ppm" 25.06.2026 https://www.sigmaaldrich.com/AU/en/sds/aldrich/912735?userType=anonymous
Sigma-Aldrich SDS "Maleic Acid, electronic grade, >=99.97% trace metal basis, water <=350 ppm" 25.06.2026 https://www.sigmaaldrich.com/AU/en/sds/aldrich/912735?userType=anonymous
This Safety Data Sheet (SDS) has been prepared in compliance with the Preparation of Safety Data Sheets for Hazardous Chemicals Code of Practice February 2016. It is the user's responsibility to determine the suitability of this information for adoption of necessary safety precautions. The information published in this SDS has been compiled from the publications listed in Section 16: to the best of our ability and knowledge these publications are considered accurate. We reserve the right to revise Safety Data Sheets as new information becomes available. Copies may be made for non-profit use.