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Safety Data Sheet EN

LOCTITE 641

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
LOCTITE 641

Regulatory Identifiers

CAS Number
N/A

Identified Uses

Sealant

Manufacturers & Suppliers

H

Henkel Ltd

manufacturer

Wood Lane End, HP2 4RQ Hemel Hempstead, Great Britain

+44 1442 278000

Emergency Contacts

Emergency Contact

+44 (0)1442 278497

24 Hours

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified warning

Hazard Classifications

Eye Irrit. Cat. 2 H319
STOT SE Cat. 3 H335
Aquatic Chronic Cat. 3 H412

GHS Pictograms

GHS07 - Health hazard

GHS07

Hazard Statements

H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
H412 Harmful to aquatic life with long lasting effects.

Precautionary Statements

P101 If medical advice is needed, have product container or label at hand.
P102 Keep out of reach of children.
P261 Avoid breathing vapors.
P273 Avoid release to the environment.
P337 + P313 If eye irritation persists: Get medical advice/attention.
P501 Dispose of contents/container in accordance with national regulation.

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type mixture

Anaerobic Sealant

Chemical Name CAS Number Concentration Hazardous
Cumene hydroperoxide EC: 201-254-7 80-15-9 1 - 3% Yes
N,N-Diethyl-p-toluidine EC: 210-345-0 613-48-9 0.1 - 1% Yes
N,N-dimethyl-o-toluidine EC: 210-199-8 609-72-3 0.1 - 1% Yes
methyl methacrylate EC: 201-297-1 80-62-6 0.1 - 1% Yes
1,4-Naphthalenedione EC: 204-977-6 130-15-4 0.01 - 0.1% Yes
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Move to fresh air.

Symptoms: Irritation, coughing, shortness of breath, chest tightness.

Skin contact

Rinse with running water and soap. Obtain medical attention if irritation persists.

Symptoms: Prolonged or repeated contact may cause skin irritation.

Eye contact

Rinse immediately with plenty of running water (for 10 minutes), seek medical attention from a specialist.

Symptoms: Irritation, conjunctivitis.

Ingestion

Rinse out mouth, drink 1-2 glasses of water, do not induce vomiting.

Immediate Medical Attention

Seek medical advice.

Medical Treatment

See section: Description of first aid measures

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Carbon dioxide, foam, powder

Unsuitable media

None known

Specific hazards

In the event of a fire, carbon monoxide (CO), carbon dioxide (CO2) and nitrogen oxides (NOx) can be released.

Instructions

In case of fire, keep containers cool with water spray.

Firefighter Protection

Wear self-contained breathing apparatus and full protective clothing, such as turn-out gear.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Emergency procedures

Avoid contact with skin and eyes. Ensure adequate ventilation. Wear protective equipment.

Small spill

wipe up with paper towel and place in container for disposal.

Large spill

absorb onto inert absorbent material and place in sealed container for disposal.

Environmental

Do not empty into drains / surface water / ground water.

—

Related Products

Similar products with comparable safety profiles

L

LOCTITE 648

---

L

LOCTITE 648

---

L

LOCTITE 660

---

L

LOCTITE 542

---

L

LOCTITE 542

---

L

LOCTITE 542

---

L

LOCTITE 542

---

L

LOCTITE 542

---

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Use only in well-ventilated areas. Avoid skin and eye contact. Prolonged or repeated skin contact should be avoided.

Storage

Refer to Technical Data Sheet

Hygiene

Good industrial hygiene practices should be observed. Wash hands before work breaks and after finishing work. Do not eat, drink or smoke while working.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Ensure good ventilation/extraction.

Hands

Chemical-resistant protective gloves (EN 374). Suitable materials for short-term contact or splashes (recommended: at least protection index 2, corresponding to > 30 minutes permeation time as per EN 374): nitrile rubber (NBR; >= 0.4 mm thickness). Suitable materials for longer, direct contact (recommended: protection index 6, corresponding to > 480 minutes permeation time as per EN 374): nitrile rubber (NBR; >= 0.4 mm thickness). This information is based on literature references and on information provided by glove manufacturers, or is derived by analogy with similar substances. Please note that in practice the working life of chemical-resistant protective gloves may be considerably shorter than the permeation time determined in accordance with EN 374 as a result of the many influencing factors (e.g. temperature). If signs of wear and tear are noticed then the gloves should be replaced.

Eyes

Safety glasses with sideshields or chemical safety goggles should be worn if there is a risk of splashing. Protective eye equipment should conform to EN166.

Respiratory

Ensure adequate ventilation. An approved mask or respirator fitted with an organic vapour cartridge should be worn if the product is used in a poorly ventilated area. Filter type: A (EN 14387)

Skin/Body

Wear suitable protective clothing. Protective clothing should conform to EN 14605 for liquid splashes or to EN 13982 for dusts.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Physical State
liquid
Physical State Data
liquid
State Under Standard Conditions
---
Appearance
liquid, yellow
Colour
yellow
Colour Intensity
---
Form
---
Odor
characteristic
Odor Threshold
No data available / Not applicable
Ph
No data available / Not applicable
Melting Point
No data available / Not applicable
Boiling Point
> 149 °C (> 300.2 °F)
Flash Point
> 93,3 °C (> 199.94 °F); Tagliabue closed cup
Freezing Point
---
Softening Point
---
Solidification Point
---
Cloud Point
---
Crystallisation Point
---
Relative Evaporation Rate
---
Evaporation Rate
No data available / Not applicable
Vapor Pressure
< 6 mbar (27 °C (80.6 °F)); < 300 mbar (50 °C (122 °F))
Vapor Density
---
Relative Density
---
Bulk Density
---
Density
1,08 g/cm3 (20 °C (68 °F))
Flammability
---
Upper Explosive Limit
---
Lower Explosive Limit
---
Explosive Limits
---
Auto Ignition Temperature
No data available / Not applicable
Decomposition Temperature
No data available / Not applicable
Solubility
---
Partition Coefficient
No data available / Not applicable
Solubility In Water
Slight
Solubility In Fat
---
Molecular Weight
---
Voc Content
---
Metal Corrosion
---
Dynamic Viscosity
No data available / Not applicable
Kinematic Viscosity
No data available / Not applicable
Properties Status
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

Stable under recommended storage conditions.

Reactivity

Reacts with strong oxidants.

Hazardous reactions

See section reactivity

Avoid

Stable

Incompatible

See section reactivity.

Decomposition

carbon oxides. May produce fumes when heated to decomposition. Fumes may contain carbon monoxide and other toxic fumes.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

12.1. Toxicity

Toxicity (Fish): The mixture is classified based on calculation method referring to the classified substances present in the mixture.

12.2. Persistence and degradability

12.3. Bioaccumulative potential

12.4. Mobility in soil

12.5. Results of PBT and vPvB assessment

12.6. Endocrine disrupting properties

12.7. Other adverse effects

12.1. Toxicity

| Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | Cumene hydroperoxide 80-15-9 | LC50 | 3.9 mg/l | 96 h | Oncorhynchus mykiss | OECD Guideline 203 (Fish, Acute Toxicity Test) |

12.1. Toxicity

| Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | N,N-dimethyl-o-toluidine 609-72-3 | LC 50 | 46 mg/l | 96 h | Fathead minnow (Pimephales promelas) | |

12.1. Toxicity

| Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | methyl methacrylate 80-62-6 | LC50 | 350 mg/l | 96 h | Leuciscus idus | OECD Guideline 203 (Fish, Acute Toxicity Test) |

Toxicity

Toxicity (Daphnia): | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | Cumene hydroperoxide 80-15-9 | EC50 | 18 mg/l | 48 h | Daphnia magna | OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test) |

Toxicity

Toxicity (Daphnia): | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | methyl methacrylate 80-62-6 | EC50 | 69 mg/l | 48 h | Daphnia magna | EPA OTS 797.1300 (Aquatic Invertebrate Acute Toxicity Test, Freshwater Daphnids) |

12.1 Toxicity

Chronic toxicity to aquatic invertebrates | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | methyl methacrylate 80-62-6 | NOEC | 37 mg/l | 21 d | Daphnia magna | OECD 211 (Daphnia magna, Reproduction Test) |

Toxicity

Toxicity (Algae): | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | Cumene hydroperoxide 80-15-9 | ErC50 | 3,1 mg/l | 72 h | Pseudokirchneriella subcapitata | OECD Guideline 201 (Alga, Growth Inhibition Test) |

Toxicity

#### Toxicity (Algae): | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | methyl methacrylate 80-62-6 | EC50 | 170 mg/l | 96 h | Selenastrum capricornutum (new name: Pseudokirchneriella subcapitata) | OECD Guideline 201 (Alga, Growth Inhibition Test) | | methyl methacrylate 80-62-6 | NOEC | 100 mg/l | 96 h | Selenastrum capricornutum (new name: Pseudokirchneriella subcapitata) | OECD Guideline 201 (Alga, Growth Inhibition Test) |

Toxicity

Toxicity (Algae): | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | 1,4-Naphthalenedione 130-15-4 | EC50 | 0,011 mg/l | 72 h | Dunaliella bioculata | OECD Guideline 201 (Alga, Growth Inhibition Test) |

12.1 Toxicity

Toxicity to microorganisms | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | Cumene hydroperoxide 80-15-9 | EC10 | 70 mg/l | 30 min | | not specified |

Toxicity

Toxicity to microorganisms | Hazardous substances CAS-No. | Value type | Value | Exposure time | Species | Method | | methyl methacrylate 80-62-6 | EC20 | >150 - 200 mg/l | 30 min | activated sludge, domestic | ISO 8192 (Test for Inhibition of Oxygen Consumption by Activated Sludge) |

12.2. Persistence and degradability

The product is not biodegradable. | Hazardous substances CAS-No. | Result | Test type | Degradability | Exposure time | Method | | --- | --- | --- | --- | --- | --- |

The product is not biodegradable.

12.2. Persistence and degradability

| Hazardous substances CAS-No. | Result | Test type | Degradability | Exposure time | Method | | Cumene hydroperoxide 80-15-9 | | no data | 0 % | 28 d | OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test) |

12.2. Persistence and degradability

| Hazardous substances CAS-No. | Result | Test type | Degradability | Exposure time | Method | | methyl methacrylate 80-62-6 | readily biodegradable | aerobic | 94 % | 14 d | OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I)) |

12.2. Persistence and degradability

| Hazardous substances CAS-No. | Result | Test type | Degradability | Exposure time | Method | | 1,4-Naphthalenedione 130-15-4 | not readily biodegradable. | no data | 0 - 60 % | | OECD 301 A - F |

12.3. Bioaccumulative potential

| Hazardous substances CAS-No. | Bioconcentration factor (BCF) | Exposure time | Temperature | Species | Method | | Cumene hydroperoxide 80-15-9 | 9,1 | | | calculation | OECD Guideline 305 (Bioconcentration: Flow-through Fish Test) |

12.4. Mobility in soil

Cured adhesives are immobile. | Hazardous substances CAS-No. | LogPow | Temperature | Method | | --- | --- | --- | --- | | Cumene hydroperoxide 80-15-9 | 2,16 | | not specified | | methyl methacrylate 80-62-6 | 1,38 | 20 °C | other guideline: | | 1,4-Naphthalenedione 130-15-4 | 1,71 | | not specified |

12.5. Results of PBT and vPvB assessment

| Hazardous substances CAS-No. | PBT / vPvB | | --- | --- | | Cumene hydroperoxide 80-15-9 | Not fulfilling Persistent, Bioaccumulative and Toxic (PBT), very Persistent and very Bioaccumulative (vPvB) criteria. | | methyl methacrylate 80-62-6 | Not fulfilling Persistent, Bioaccumulative and Toxic (PBT), very Persistent and very Bioaccumulative (vPvB) criteria. | | 1,4-Naphthalenedione 130-15-4 | Not fulfilling Persistent, Bioaccumulative and Toxic (PBT), very Persistent and very Bioaccumulative (vPvB) criteria. |

All listed substances (Cumene hydroperoxide, methyl methacrylate, and 1,4-Naphthalenedione) do not fulfill the PBT or vPvB criteria.

12.6. Other adverse effects

No data available.
13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

Disposal

Dispose of in accordance with local and national regulations.

Waste Codes

08 04 09 waste adhesives and sealants containing organic solvents and other dangerous substances EWC
14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

VOC content < 3% (2010/75/EC)

Chemical Safety Assessment Not performed
?

Frequently Asked Questions

Common questions about safety, handling, and properties

What is the hazard signal word for LOCTITE 641?

The signal word is warning.

What is the physical form of LOCTITE 641?

LOCTITE 641 is a liquid appearing as liquid, yellow with yellow color. It has characteristic odor.

What is LOCTITE 641 used for?

Sealant

What are the hazard statements for LOCTITE 641?

This substance has 3 hazard statements:

  • H319: Causes serious eye irritation.
  • H335: May cause respiratory irritation.
  • H412: Harmful to aquatic life with long lasting effects.

What is the melting point of LOCTITE 641?

The melting point is No data available / Not applicable and the boiling point is > 149 °C (> 300.2 °F).