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Section 1. Identification

Product identifier

DURABAK (Indoor / Non-UV)

Other means of identification

Durabak Indoor; Durabak (standard); MDI-cure moisture-coat polyurethane

Recommended use

Protective polyurethane coating; truck bed liner; deck and marine coating; industrial and consumer protective coating. Follow label and this SDS.

Restrictions on use

Not for use outdoors in direct, sustained sunlight (ambers and fades in UV; use Durabak-18 for permanent exterior/UV exposure). Not for glass, marble, polished stone, or non-scuffable/non-porous glossy surfaces.

Supplier / Manufacturer: Durabak Bergenfield, NJ 07621, USA

Tel: 303-690-7190

Web: durabakcompany.com

Emergency telephone

1-800-222-1222 (Poison Help - US national poison control hotline)

Non-emergency contact

303-690-7190

Section 2. Hazard(s) Identification

2.1 GHS Classification

Hazard Class	Category	H-Statement
Flammable Liquids	3	H226
Skin Irritation	2	H315
Skin Sensitization	1	H317 (via MDI contact sensitization - see Sec 11)
Respiratory Sensitization	1	H334
Eye Irritation	2A	H319
Specific Target Organ Toxicity - Single Exposure (respiratory irritation)	3	H335
Carcinogenicity	2	H351
Specific Target Organ Toxicity - Repeated Exposure (inhalation)	2	H373
Harmful if inhaled / in contact with skin	--	H332, H312

2.2 Label Elements

Signal word: WARNING

Pictograms

GHS02 (Flame), GHS07 (Exclamation mark), GHS08 (Health hazard)

Hazard statements:

• H226: Flammable liquid and vapour.
• H312: Harmful in contact with skin.
• H315: Causes skin irritation.
• H319: Causes serious eye irritation.
• H332: Harmful if inhaled.
• H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
• H335: May cause respiratory irritation.
• H351: Suspected of causing cancer.
• H373: May cause damage to organs through prolonged or repeated inhalation exposure.

Precautionary statements:

• P210: Keep away from heat, sparks, open flames, hot surfaces. No smoking.
• P260: Do not breathe vapours, mist, or spray.
• P271: Use only outdoors or in a well-ventilated area.
• P280: Wear protective gloves / protective clothing / eye protection / face protection.
• P284: In case of inadequate ventilation wear respiratory protection.
• P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
• P304 + P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do - continue rinsing.
• P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER / doctor.
• P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
• P501: Dispose of contents / container to landfill site after solidification.

2.3 Other Hazards

No specific dangers known if the regulations / notes for storage and handling are considered.

Labelling note

Contains isocyanates (MDI). May produce an allergic reaction. Hazard-determining component for labelling: Xylene (mixed isomers). Persons already sensitized to isocyanates must not be re-exposed even at concentrations below the OEL.

2.4 Classification not meeting cut-off thresholds

IPDI (isophorone diisocyanate) is NOT present in this formulation (INDOOR / MDI chemistry). See Section 3. The respiratory sensitizer hazard in this product derives exclusively from MDI (4,4'-diphenylmethane diisocyanate, CAS 101-68-8).

Section 3. Composition / Information on Ingredients

Substance / Mixture: Mixture

Chemical family: Moisture-cured aromatic polyurethane coating in xylene solvent

Chemical formula: Mixture (proprietary)

Component	CAS Number	EINECS	Content (% by mass)	Classification (GHS / CLP)
Xylene, mixed isomers	1330-20-7	215-535-7	20 - 30%	H226, H312 + H332, H315
Ethylbenzene (constituent of aromatic xylene solvent)	100-41-4	202-849-4	5 - 10%	H226, H304, H332, H351, H373
Diphenylmethane-4,4'-diisocyanate (MDI / 4,4'-MDI)	101-68-8	202-966-0	< 5.3%	H315, H319, H332, H334, H335, H351, H373
Polyurethane resin, pigments, and fillers (proprietary blend)	Proprietary	--	Balance	Non-hazardous or below GHS cut-off

Section 4. First-Aid Measures

4.1 Description of first-aid measures

Inhalation: Move to fresh air. In case of any discomfort, seek medical attention immediately.

Skin contact: Use hand cleaner / soap and water. Remove contaminated clothing. If skin irritation continues, consult a doctor.

Eye contact: Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.

Ingestion: Do not induce vomiting. Seek immediate medical attention.

4.2 Most important symptoms and effects, both acute and delayed

Inhalation sensitizer with accumulative effects. Risk of dermatitis. May cause lung damage if swallowed. MDI: respiratory sensitization may occur; chronic inhalation exposure may result in permanent decrease of lung function; may cause sensitization by skin contact. Xylene: prolonged skin contact may defat skin causing dermatitis; prolonged inhalation may cause CNS disturbances.

4.3 Indication of any immediate medical attention and special treatment needed

If respiratory sensitization is suspected (wheezing, chest tightness, difficulty breathing on re-exposure), remove from exposure immediately and consult a physician. Persons once sensitized to isocyanates should not return to MDI-containing environments.

Section 5. Fire-Fighting Measures

5.1 Extinguishing media

Suitable: Foam, carbon dioxide, dry powder, fog to cool and control.

Unsuitable: Do NOT use water jets. Containers can become pressurized if contents are contaminated with water.

5.2 Special hazards arising from the substance or mixture

Flammable with toxic fumes. Flash point 27 degrees C (ASTM D56). Decomposition / combustion products may include carbon monoxide, carbon dioxide, oxides of nitrogen, and smoke.

5.3 Advice for fire-fighters

Wear protective equipment and respirators. Blown or distorted containers should be handled with extreme caution. Use self-contained breathing apparatus (SCBA) in enclosed or poorly ventilated areas.

Section 6. Accidental Release Measures

6.1 Personal precautions, protective equipment, and emergency procedures

Wear protective equipment. Keep unprotected persons away. Eliminate ignition sources (no sparks, flames, or smoking).

6.2 Environmental precautions

Do not allow to enter drains or sewers / surface or ground water.

6.3 Methods and materials for containment and cleaning up

Ensure adequate ventilation. Hazardous in liquid state. Solidify by reaction with water before disposal. Absorb small spills with inert material (sand, earth). Collect solidified material and dispose in accordance with local regulations.

6.4 Reference to other sections

See Section 8 for personal protection. See Section 13 for disposal.

Section 7. Handling and Storage

7.1 Precautions for safe handling

Flammable. No open flames. No smoking. Open with care. Cover lid / bung with a cloth while releasing pressure. Generates carbon dioxide gas from reaction with water. Do not seal if contaminated with water due to danger of bursting. Use adequate ventilation. Wear appropriate PPE (Section 8). Stir thoroughly before use; do not shake (entrains moisture and air). Reseal container immediately after each use.

7.2 Conditions for safe storage, including any incompatibilities

Store separately from any reactive substances, especially oxidizers. Keep containers tightly sealed. Adequate ventilation required. Store at 32-104 degrees F (0-40 degrees C). Shelf life: 12 months unopened under recommended storage conditions.

Incompatible materials: Oxidizers; water (generates CO2 gas; do not seal if water-contaminated).

Section 8. Exposure Controls / Personal Protection

8.1 Control parameters (Occupational Exposure Limits)

Component	CAS	TWA	STEL	Basis
Xylene, mixed isomers	1330-20-7	50 ppm / 221 mg/m3 (8 h)	100 ppm / 442 mg/m3 (15 min)	EU IOELV
Xylene, mixed isomers	1330-20-7	100 ppm (435 mg/m3)	--	OSHA PEL (29 CFR 1910.1000 Table Z-1)
Xylene, mixed isomers	1330-20-7	100 ppm TWA	150 ppm STEL	ACGIH TLV
Ethylbenzene	100-41-4	--	--	EU IOELV (no standalone entry; listed as constituent of xylene fraction above)
Ethylbenzene	100-41-4	100 ppm (435 mg/m3)	--	OSHA PEL (29 CFR 1910.1000 Table Z-1)
Ethylbenzene	100-41-4	20 ppm TWA	--	ACGIH TLV
4,4'-MDI (diphenylmethane diisocyanate)	101-68-8	0.005 ppm / 0.02 mg/m3 (8 h)	0.01 ppm / 0.07 mg/m3 (15 min)	EU IOELV
4,4'-MDI (diphenylmethane diisocyanate)	101-68-8	None established	--	OSHA PEL
4,4'-MDI (diphenylmethane diisocyanate)	101-68-8	0.005 ppm (0.051 mg/m3) TWA	--	ACGIH TLV
4,4'-MDI (diphenylmethane diisocyanate)	101-68-8	0.005 ppm TWA	0.020 ppm ceiling	NIOSH REL

Note: MDI is a respiratory sensitizer. The OEL values above represent reference limits; once an individual is sensitized, NO safe re-exposure level exists. Persons sensitized to isocyanates must be excluded from further exposure.

8.2 Engineering controls

Adequate local exhaust ventilation required, particularly during spray application. Use in well-ventilated areas or outdoors. In enclosed spaces, ensure mechanical ventilation sufficient to keep airborne MDI and xylene concentrations below OEL values. Ground / bond containers during transfer to prevent static discharge.

8.3 Personal protective equipment (PPE)

Respiratory protection: Cartridge-type respirator with organic-fumes cartridge. Essential for spray application. For confined spaces or prolonged exposure, use supplied-air respirator (SCBA). Half-face respirator with OV/P100 combination cartridge is minimum for spray work.

Eye / face protection: Tightly sealed chemical splash goggles or full face shield. Safety glasses are NOT sufficient for spray operations.

Hand protection: Nitrile rubber gloves (minimum 0.1 mm thickness). Replace gloves immediately if contaminated.

Skin / body protection: Coveralls and safety boots. Avoid skin contact with uncured product.

Section 9. Physical and Chemical Properties

Property	Value
Physical state	Liquid
Color	Various (black, grey, red, blue, and other pigmented colors available)
Odor	Sweetish (mild solvent)
Odor threshold	No data available
pH	8.0
Melting point / freezing point	< -46 degrees C
Initial boiling point and range	140 degrees C
Flash point	27 degrees C (80.6 degrees F), ASTM D56 (closed cup)
Evaporation rate	No data available
Flammability (solid, gas)	Not applicable (liquid)
Upper / lower flammability or explosion limits	Lower / Upper explosion limit: refer to xylene (approx. LEL 1.0% / UEL 7.0% by volume)
Vapor pressure	14.2 hPa at 20 degrees C
Vapor density	No data available
Relative density	1.03 g/cm3 at 20 degrees C (water = 1.00)
Solubility (water)	Not miscible with water; reacts with water
Partition coefficient: n-octanol / water	No data available
Auto-ignition temperature	> 200 degrees C
Decomposition temperature	200 degrees C
Viscosity (dynamic)	80 - 110 KU (Krebs units) at 20 degrees C
VOC content	250 g/L (2.08 lb/gal); VOC by volume <= 29.0%
Solids content	66% by weight / 75.8% by volume
Organic solvents	< 24.75% by mass
Water content	< 0.1% by mass

Section 10. Stability and Reactivity

10.1 Reactivity

Reacts with water (atmospheric moisture cure; generates CO2 gas). Reactive with oxidizers.

10.2 Chemical stability

Thermal decomposition / conditions to be avoided: Could produce static discharge - use earthing / bonding. Stable under recommended storage conditions (sealed containers, 32-104 degrees F).

10.3 Possibility of hazardous reactions

Stable if stored under normal conditions.

10.4 Conditions to avoid

When exposed to abnormally high temperatures, containers will bulge and possibly burst. Avoid open flame, sparks, heat sources, and direct sunlight on sealed containers.

10.5 Incompatible materials

Oxidizers. Water (generates CO2 gas; do not seal container if contaminated with water - danger of bursting).

10.6 Hazardous decomposition products

Carbon monoxide, carbon dioxide, oxides of nitrogen, and smoke may be produced on combustion or thermal decomposition.

Section 11. Toxicological Information

11.1 Information on toxicological effects

Acute toxicity (LD50 / LC50 values):

Component	Route	Species	Value
Xylene (mixed isomers)	Oral LD50	Rat	4300 mg/kg
Xylene (mixed isomers)	Dermal LD50	Rabbit	> 1700 mg/kg
Xylene (mixed isomers)	Inhalation LC50	Rat	27.6 mg/L / 4 hours
MDI (4,4'-diphenylmethane diisocyanate)	Oral LD50	Rat	9200 mg/kg
MDI (4,4'-diphenylmethane diisocyanate)	Dermal LD50	Rabbit	> 5000 mg/kg
MDI (4,4'-diphenylmethane diisocyanate)	Inhalation LC50	Rat	0.49 mg/L / 4 hours

Skin corrosion / irritation:

Xylene: practically non-irritating. MDI: slight to moderate irritation; may stain skin. Product classified Skin Irritant Category 2 (H315).

Serious eye damage / eye irritation:

Xylene: irritant. MDI: moderate eye irritation; may cause transient corneal damage. Product classified Eye Irritant Category 2A (H319).

Respiratory or skin sensitization:

Skin and inhalation sensitizer. MDI: respiratory sensitization may occur; chronic inhalation exposure may result in permanent decrease of lung function; may cause sensitization by skin contact. Prolonged xylene skin contact may defat skin causing dermatitis; prolonged inhalation may cause CNS disturbances. Product classified Respiratory Sensitizer Category 1 (H334).

Germ cell mutagenicity: No data available for the mixture.

Carcinogenicity: No carcinogenic, mutagenic, or genetic effects have been established for the mixture as a whole. Note: the MDI component (CAS 101-68-8) carries H351 - Suspected of causing cancer - based on its GHS individual substance classification. This SDS therefore carries H351 for the mixture in Section 2.

Reproductive toxicity: No data available.

Specific target organ toxicity - single exposure (STOT SE): May cause respiratory irritation (H335). Category 3 - respiratory tract irritation.

Specific target organ toxicity - repeated exposure (STOT RE): May cause damage to organs (lungs/respiratory system) through prolonged or repeated inhalation exposure (H373). MDI: chronic inhalation may result in permanent decrease of lung function.

Aspiration hazard: No data available. Ingestion: Do not induce vomiting; may cause lung damage if swallowed.

Section 12. Ecological Information

12.1 Ecotoxicity

None of the components is persistent in the aquatic environment. Considered harmful to terrestrial vertebrates. May have short-term environmental effects.

12.2 Persistence and degradability

Biodegradable. Once solidified, can be disposed of in landfill sites.

12.3 Bioaccumulative potential

Not bioaccumulative.

12.4 Mobility in soil

Low mobility in soil due to solidification by reaction with water.

12.5 Results of PBT and vPvB assessment

Not applicable.

12.6 Other adverse effects

No data available.

Section 13. Disposal Considerations

13.1 Waste treatment methods

Hazardous in liquid state. Solidify by reaction with water before disposal. Danger of bursting - do not seal container during solidification process. Use reputable waste disposal contractors. Destroy used containers. Consult local official regulations before disposal.

European Waste Catalogue (reference) codes: 08 00 00, 08 01 00, 08 01 11 (waste paint and varnish containing organic solvents or other dangerous substances).

Uncleaned / empty packaging: Leave container unsealed for 3 to 4 days to solidify contents from atmospheric moisture, then dispose in landfill in accordance with local regulations.

If discarded as supplied (unused), this product exhibits the RCRA characteristic of ignitability, waste code D001 (flash point <60 C / 140 F, per 40 CFR 261.21). Unused xylene-bearing waste may also carry listed code U239 (xylene). Confirm the codes for your actual waste stream.

Section 14. Transport Information

14.1 UN number

UN 1263

14.2 UN proper shipping name

PAINT

14.3 Transport hazard class(es)

Class 3 - Flammable Liquids (ADR, IMDG, IATA / ICAO)

14.4 Packing group

III

14.5 Environmental hazards

Marine pollutant: No (Not Dangerous / ND)

14.6 Special precautions for user

Mode	Regulatory Code	Additional Info
Road (ADR/DOT)	UN 1263, PAINT, 3, PG III	Danger code (Kemler): 30; EA code 127; HAZCHEM 3(Y); ADR limited quantities: 1 L and 4 L; transport category 3
Sea (IMDG)	UN 1263, PAINT, 3, PG III	IMO Class 3; EMS F-E~S-E; not a marine pollutant
Air (IATA)	UN 1263, PAINT, 3, PG III	Check current IATA DGR for passenger / cargo quantity limits

Limited quantity relief (ADR / IMDG)

Transport and packing may be in accordance with limited-quantities regulations; consult current ADR / IMDG for applicable exemptions. Consumer-quantity ground shipments may also qualify for US DOT limited-quantity or "Paint" regulatory relief under 49 CFR 173.150.

14.7 Transport in bulk according to MARPOL / IBC Code

Not applicable for packaged goods.

Section 15. Regulatory Information

15.1 Safety, health, and environmental regulations / legislation specific to the substance or mixture

United States - Federal:

• OSHA Hazard Communication Standard: 29 CFR 1910.1200. This SDS complies with the HazCom 2012 (GHS Rev 3+) format; updated to GHS Rev 7 structure.
• TSCA (Toxic Substances Control Act): All components are active or exempt on the US TSCA Inventory. TSCA 8(a) PAIR and 8(c) SAR records apply to MDI.
• Clean Air Act Section 112(b) HAPs: Xylene and ethylbenzene are listed hazardous air pollutants.
• Clean Water Act: Ethylbenzene is a Section 307 priority pollutant. Xylene and ethylbenzene are Section 311 hazardous substances.
• SARA Title III, Section 302/304: No extremely hazardous substances present; reportable quantity not applicable.
• SARA Title III, Section 313 (Emergency Planning and Community Right-to-Know Act): Ethylbenzene (CAS 100-41-4) and xylene (CAS 1330-20-7) are listed toxic chemicals subject to supplier notification requirements under SARA Section 313.
• CERCLA: Xylene and ethylbenzene are listed as CERCLA hazardous substances.
• State Right-to-Know: Xylene, ethylbenzene, and MDI (diisocyanate) are listed under Massachusetts, New Jersey, New York, and Pennsylvania right-to-know regulations.
• International Inventories: All components are listed or exempt on the inventories of Australia, Canada, China, Japan (CSCL), Republic of Korea, New Zealand, Philippines, Taiwan, EU/Eurasian (Russia), and Vietnam. United States: all active or exempt (see TSCA above).

United States - VOC / Air Quality:

• Federal EPA AIM (Architectural & Industrial Maintenance) Coatings Rule: Product VOC is 250 g/L (2.08 lb/gal). The applicable AIM limit for Industrial Maintenance coatings is 450 g/L - COMPLIANT.
• Sold in California. CARB SCM-compliant as an Industrial Maintenance coating at <=250 g/L VOC. NOT available in the SCAQMD (greater Los Angeles) district or other air districts that enforce a 100 g/L Industrial Maintenance limit.

California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986):

WARNING: This product can expose you to ethylbenzene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

European Union: This product is not sold into the EU or UK.

ADR / IMDG transport limited quantities (reference from source SDS):

ADR limited quantities: 1 L and 4 L. Transport category 3. Product may qualify as non-dangerous goods under limited-quantities provisions (consult current ADR/IMDG edition).

Section 16. Other Information

Revision date: 2026-06-18

Version: 1.0

Safety notices (from source SDS)

CONTAINS ISOCYANATE - POTENTIAL SENSITISER - ENSURE PRECAUTIONS ARE TAKEN. PAY SPECIAL ATTENTION TO STORAGE AND HANDLING REQUIREMENTS. IN CASE OF ANY DISCOMFORT FROM CONTACT WITH THE MIXTURE, ALWAYS SEEK MEDICAL ADVICE.

Full H-statement reference list

Code	Statement
H226	Flammable liquid and vapour
H312	Harmful in contact with skin
H315	Causes skin irritation
H319	Causes serious eye irritation
H332	Harmful if inhaled
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335	May cause respiratory irritation
H351	Suspected of causing cancer
H373	May cause damage to organs through prolonged or repeated inhalation exposure

Disclaimer

Information presented in good faith and believed to be correct as of the revision date stated above. This SDS is not exhaustive and does not replace professional safety, health, and regulatory review. Users are responsible for verifying the current status and suitability of information for their specific applications and local regulatory requirements. The manufacturer expressly disclaims liability for any and all losses, damages, and / or expenses arising out of storage, handling, use, or disposal of the product.