Micro Phase Cleaning of jet engine parts to allow crack detection

Number

177-EN

Section

General Section

Use

Sector

General manufacturing, e.g. machinery, equipment, vehicles, other transport equipment

Function

Cleaning agent

Process

Open processing and transfer operations at substantially elevated temperature

Product category

washing ad cleaning products

Application

Cleaning of oil, grease and combustion residue

Abstract

The stainless steel, nickel-alloys and titan parts of jet engines are cleaned by a micro phase system. Earlier the company used trichloroethylene-based processes for degreasing.

Substituted substances

Trichloroethylene

CAS No. 79-01-6 EC No. 201-167-4 Index No. 602-027-00-9

Chemical group

Organochloride compound, halogenated aliphatic hydrocarbon

Classification: hazard statements

H350 May cause cancer
H341 Suspected of causing genetic defects
H336 May cause drowsiness or dizziness
H315 Causes skin irritation
H319 Causes serious eye irritation
H412 Harmful to aquatic life with long lasting effects

Other adverse effects

The substance is: 2A carcinogen (IARC), neurotoxic cat. 4 (Vela et al.) as listed in the Substance Database according to SUBSPORT Screening Criteria (SDSC).

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

Alternative Substances

Aqueous cleaner

CAS No. EC No. Index No.

Chemical group

Solvents

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

(1-Methyl-1,2-ethanediyl)bis[oxy(methyl-2,1-ethanediyl)] diacrylate

CAS No. 42978-66-5 EC No. 256-032-2 Index No. 607-249-00-X

Chemical group

Acrylates

Classification: hazard statements

H335 May cause respiratory irritation
H315 Causes skin irritation
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Other adverse effects

Aquatic Chronic 2 - H411 Eye Irrit. 2 - H319 Skin Irrit. 2 - H315 Skin Sens. 1 - H317 STOT SE 3 - H335

Reliability of information

Evidence of implementation: there is evidence that the solution was implemented and in use at time of publication

Reason substitution

CMR
neurotoxicant

Hazard Assessment

Substance to be substituted: Trichloroethylene is a Substance of very high concern and is included on the REACH candidate list for authorization, according to Article 59 of Regulation (EG) No. 1907/2006. (REACH Regulation). Alternative substance: The alternative product is not listed in the SUBSPORTplus Database and has no harmonised classification according to Annex VI of Regulation (EC) No 1272/2008 (CLP Regulation).

Description of Substitution

Jet engine parts from repair and maintenance, soiled by grease, oil and combustion residue were cleaned by vapour degreasing with trichloroethylene. Meanwhile many problems have occurred, mainly regarding occupational safety and environmental issues. Trichloroethylene is classified as a carcinogenic substance. Additional problems related to the use of trichloroethylene were a risk of hydrogen embrittlement of titanium parts and decreased hydrophilicity of the titanium surface. Therefore, at the beginning of 2006 the manufacturer decided to change this outdated cleaning process. Now the enterprise uses a Zestron cleaner based on Micro Phase Cleaning (MPC) Technology. This medium was developed for precision parts cleaning in the aircraft industry. Amongst others, it serves as an alternative for solvent based processes in dip and spray-in-air cleaning equipment. According to the producer, this medium is a water based mixture of polar and non-polar components. Dilution is usually 10%. The effectiveness of MPC Technology is as follows: 1. By increased temperature and agitation micro phases are formed, 2. These phases remove the dirt from the surface and transfers it into the surrounding area, 3. Thus the contaminants can be easily filtered from the cleaning bath and extremely long bath life cycles can be achieved. The bath can be controlled by monitoring the refractive index. The cleaning is performed in 3 steps in a one-chamber spray plant. In the first step the agent is heated up to 50 °C. The parts are cleaned by spraying under low pressure (below 14 – 20 bar). In the next cleaning step the parts are rinsed using this same agent also at to 50 °C. Finally the parts are dried with warm air. After cleaning the parts are measured, tested and inspected for cracks.

Case/substitution evaluation

In this case story trichloroethylene-based processes in dip and spray-in-air cleaning equipment were replaced. The alternative does not contain any halogenated compounds and is environmentally friendly.

State of implementation

In use

Date and place of implementation

2007 in Germany

Availability ofAlternative

On the market

Producer/Provider

See contact: information supplier

Type of information supplier

Producer / distributor

Contact

http://www.wackchem.com

Further information

More information could be found in the Cleantool-Database: www2.cleantool.org

Date, reviewed

November 26, 2021