How many approved sources does 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One have in Australia?

As of the APVMA export downloaded 2026-10-23, 1 current active constituent approval cover 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One. Holders include Lanxess Pty Ltd. A holder is not necessarily the manufacturer.

Who registers 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One products in Australia?

As of the APVMA export downloaded 2026-10-23, 2 companies register 4 agricultural products containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One. The most products are registered by Jotun Australia Pty Ltd and Arch Wood Protection (Aust) Pty Limited.

When does data protection end for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One?

As of the APVMA export downloaded 2026-10-23, no product containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One has data protection running past 2026-10-23.

Which crops is 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One registered for in Australia?

Registered labels containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One most often cover Commercial vessel(steel,timber,fibreglas, Naval vessels (steel,fibreglass,timber), Freshly sawn or peeled timer - dip treatment and Freshly sawn or peeled timber - spray treatment. The label is what applies.

4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One

Antifouling BiocideAgricultural active constituent

1 approved source, 0 of them since 2024. 4 registered products from 2 registrants. 2 registrants sell it without holding an approval.

Single approved source

Approved sources: 1
Registered products: 4
Registrants: 2
Data protection ends: None current

Market structure

Who registers it

Also holds a source approvalRegisters only

Market timeline

Registered products, cumulativeSources approved each year

Year	Sources approved	Products first registered	Products, cumulative
2017	0	1	2
2018	1	0	2
2026	0	2	4

Only records current in the export are counted, so earlier years are understated. 1 products first registered before 2002 are in the starting total.

Who to talk to

Register products, hold no approval2

Their products rely on a source approved for another company.

Jotun Australia Pty Ltd3 products
Arch Wood Protection (Aust) Pty Limited1 product

Hold an approval and register products

Approval holders that also sell products under their own name.

None in the export.

Hold an approval, no products1

Holders with no registered product of their own containing it.

Lanxess Pty LtdApproval only

1 approved source

Approval holder	Its products with this active	Approval no.	Approved
Lanxess Pty Ltd	—	83968	2018-01-30

Sorted by how many products the holder registers with this active. A holder can be the manufacturer or a company holding the approval for a source.

2 registrants

Registrant	Products	Holds an approval
Jotun Australia Pty Ltd	3	No
Arch Wood Protection (Aust) Pty Limited	1	No

4 registered products

No.	Product	Registrant	Formulation	Content	First registered	Label
46488	Antifouling Seavictor 50 Black Mix	Jotun Australia Pty Ltd	Paint	36 g/L	2000-03-06	PDF
97499	Antifouling Seavictor 50 Blue Mix	Jotun Australia Pty Ltd	Paint	35 g/L	2026-07-29	PDF
97552	Antifouling Seavictor 50 Dark Red Mix	Jotun Australia Pty Ltd	Paint	35 g/L	2026-07-29	PDF
82666	Taratek LT Antisapstain Fungicide Mix	Arch Wood Protection (Aust) Pty Limited	Emulsion - Oil In Water	133 g/L	2017-11-03	PDF

Crops and targets

Crops and situations

Commercial vessel(steel,timber,fibreglas3
Naval vessels (steel,fibreglass,timber)3
Freshly sawn or peeled timer - dip treatment1
Freshly sawn or peeled timber - spray treatment1

Targets

Marine fouling3
Sapstain mould1

Number of registered products whose label covers each crop or target, not volumes. The label is what applies.

Changes in the last six months

29 Jul 2026New product
Jotun Australia Pty Ltd registered Antifouling Seavictor 50 Dark Red with 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One + Copper Present As Cuprous Oxide
29 Jul 2026New product
Jotun Australia Pty Ltd registered Antifouling Seavictor 50 Blue with 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One + Copper Present As Cuprous Oxide

Quick answers

How many approved sources does 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One have in Australia?: As of the APVMA export downloaded 2026-10-23, 1 current active constituent approval cover 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One. Holders include Lanxess Pty Ltd. A holder is not necessarily the manufacturer.
Who registers 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One products in Australia?: As of the APVMA export downloaded 2026-10-23, 2 companies register 4 agricultural products containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One. The most products are registered by Jotun Australia Pty Ltd and Arch Wood Protection (Aust) Pty Limited.
When does data protection end for 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One?: As of the APVMA export downloaded 2026-10-23, no product containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One has data protection running past 2026-10-23.
Which crops is 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One registered for in Australia?: Registered labels containing 4,5-Dichloro-2-N-Octyl-4-Isothiazolin-3-One most often cover Commercial vessel(steel,timber,fibreglas, Naval vessels (steel,fibreglass,timber), Freshly sawn or peeled timer - dip treatment and Freshly sawn or peeled timber - spray treatment. The label is what applies.