Hydroxyethylamino-Dimethylene Phosphonic Acid, EABMP Acid, Ethanolamine bismethylene Phosphonic Acid, HEIDP, HEMPA, 5995-42-6

HYDROXYETHYLAMINO-DI(METHYLENE PHOSPHONIC ACID) (HEMPA)

1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

Short Identity Section

Detailed Identification

Description:
HEMPA is an organophosphonic acid-based water treatment chemical with excellent chelating, scale inhibition, and corrosion inhibition properties. It demonstrates superior performance, especially in systems with high dissolved iron and calcium concentrations. Thanks to its compatibility with methanol-water mixtures, it is widely used in oilfields and specialized industrial applications. HEMPA creates strong synergistic effects when used with other water treatment chemicals, enhancing system performance. It is registered in the ECHA database with EC number 227-833-4.

2. PHYSICAL AND CHEMICAL PROPERTIES

Note: Values are typical and may vary by source and production batch.

3. SOLUBILITY PROFILE

Note: HEMPA is soluble in water and compatible with methanol-water mixtures.

4. CHEMICAL PROPERTIES AND REACTIONS

Incompatibilities

• Strong oxidizing agents

• Strong bases (risk of exothermic reaction)

• Active metals (hydrogen gas may be released)

Chemical Reactions

• Chelation: Forms soluble complexes with metal ions (Ca²⁺, Mg²⁺, Fe²⁺, Zn²⁺).

• Scale Inhibition: Modifies crystal morphology of calcium carbonate and calcium sulfate.

• Iron Control: Stabilizes iron ions in high-iron waters.

5. SPECIFICATIONS

Packaging Options

6. APPLICATIONS AND INDUSTRIAL USES

6.1 Primary Application Areas

6.2 Key Advantages

• Strong chelating properties

• Effective scale control

• Corrosion inhibition performance

• Effective in high-iron waters

• Superior performance in high-calcium hardness waters

• Compatibility with methanol-water solutions

• Synergistic effect with other phosphonates and polymers

• High stability in industrial processes

6.3 Usage Information

HEMPA is typically formulated with the following products:

• Organophosphonic acids

• Polycarboxylic acids

• Various metal salts

• Dispersant polymers

• Corrosion inhibitors

Dosage should be determined based on system characteristics, water analysis, and process conditions.

7. BIOLOGICAL AND STRUCTURAL PROPERTIES

Note: This product is an industrial water treatment chemical. It is not intended for biological, pharmaceutical, or food applications.

8. BIOCHEMICAL APPLICATIONS

Note: Not applicable for this industrial water treatment chemical.

9. SAFETY AND TOXICOLOGY

9.1 Acute Toxicity

9.2 Chronic Toxicity

9.3 GHS Classification

9.4 Precautionary Statements

9.5 Safety Precautions and PPE

Hazards:

• May be corrosive to metals

• Causes serious eye damage

• Harmful to aquatic life with long-lasting effects

PPE (recommended):

• Chemical-resistant rubber gloves

• Safety goggles

• Suitable work clothing

• Face shield when necessary

9.6 Environmental Fate

10. TRANSPORT INFORMATION

Note: Transport classification is UN 3265, Class 8, Packing Group III due to the acidic and corrosive nature of the product.

11. REGULATORY INFORMATION

Note: HEMPA is listed in the TSCA Inventory and is registered under REACH with EC number 227-833-4. This product is an industrial water treatment chemical and is not intended for pharmaceutical or food applications.

12. STORAGE AND HANDLING

13. FIREFIGHTING MEASURES

14. ACCIDENTAL RELEASE MEASURES

15. FIRST AID MEASURES

Note: HEMPA is acidic. Immediate flushing with water is essential for skin and eye contact.

16. RAW MATERIALS AND DOWNSTREAM PRODUCTS

16.1 Raw Materials (Upstream)

16.2 Downstream Products

17. SECTORAL SUITABILITY AND USAGE LEVELS

18. CARBON DIOXIDE ABSORPTION AND REAGENTS

Not applicable. HEMPA is an industrial water treatment chemical and is not used for CO₂ absorption or as a chemical reagent.

19. DERIVATIVES AND RELATED COMPOUNDS

Note: HEMPA demonstrates superior performance in high-iron and high-calcium waters.

20. SUMMARY AND CRITICAL WARNINGS

SUMMARY

HEMPA (Hydroxyethylamino-Di(Methylene Phosphonic Acid)) is an organophosphonic acid-based water treatment chemical with excellent chelating, scale inhibition, and corrosion inhibition properties. It demonstrates superior performance, especially in systems with high dissolved iron and calcium concentrations. Thanks to its compatibility with methanol-water mixtures, it is widely used in oilfields and specialized industrial applications. HEMPA creates strong synergistic effects when used with other water treatment chemicals, enhancing system performance.

It appears as a colorless to pale yellow clear liquid. Its active content is ≥60.0%, pH is ≤2.0 (1% solution), density is ≥1.30 g/cm³ (20°C), and molecular weight is 249.10 g/mol. It is soluble in water.

It is used in oilfield water injection systems, production and process waters, methanol-based applications, cooling water systems, circulating water circuits, industrial detergent formulations, liquid cleaning products, metal surface treatment baths, and corrosion protection applications.

Key Properties

Main Application Areas

Key Safety Points

• CORROSIVE: May be corrosive to metals (H290); causes serious eye damage (H318).

• AQUATIC TOXICITY: Harmful to aquatic life with long-lasting effects (H412). Avoid environmental release.

• PPE REQUIRED: Use chemical-resistant rubber gloves, safety goggles, and suitable work clothing.

• STORAGE: Store in original packaging in a cool, dry place away from sunlight. Shelf life is 10 months.

• DISPOSAL: Dispose of according to local regulations.

Critical Warnings

• HEMPA is acidic; avoid contact with skin and eyes.

• May be corrosive to metals.

• Causes serious eye damage.

• Harmful to aquatic life with long-lasting effects.

• This TDS contains complete toxicological, transport, firefighting, and first aid data, but always refer to the supplier's official SDS/MSDS.

• Do not use this TDS as a substitute for the official SDS/MSDS.

• Users are responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements.

Disclaimer:
This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on the original source document, verified CAS/EC numbers, and data completed from reliable sources (ECHA, manufacturer SDSs). However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with HEMPA.