Permission to handle certain group B chemical substances

You must have a permit to handle certain carcinogenic, sensitising, allergenic or reprotoxic substances, group B substances. Apply for a permit by filling in the form.

Which substances are group B substances is specified in our regulation on chemical hazards in the working environment (AFS 2011: 19) and in the table below. If you handle these substances without a permit, the Swedish Work Environment Authority may decide that you must pay a sanction fee.

You do not need a permit to stock, sell or transport unbroken original packaging containing these substances.

The Swedish Work Environment Authority’s processing time for permits is normally 3 months. So be sure to apply in good time.

How to apply

  1. Fill in the application form

    This application form is only available in Swedish for the time being.

    Permission to handle group A and B chemical substances, application form in swedish, pdf, opens in new window

    Amongst other things, you must fill in information on:

    • the name of the substance or product you are going to handle
    • the CAS number of the substance or product
    • your methods
    • the reason for handling the substance
    • the length of time for which you are seeking a permit
    • how much of the substance you will have and use
    • the number of people concerned
    • the reason why you cannot replace the substance or product with a less dangerous product.

  2. Produce the following documents

    • your risk assessment with decisions on measures
    • your written handling and safety instructions
    • opinion of your safety officer on the handling of the substance.

  3. Send the application form and documents 
    Send the application form and attach the risk assessment, the instructions and the opinion from the safety officer, send it to:

    or in a letter to
    the Swedish Work Environment Authority,
    Box 9082 
    171 09 Solna 

    You will receive an automatic response to the email address from which the application was sent, confirming that we have received your notification. If you send us a letter, we will respond by letter.

If your application is not complete, we will ask you to supplement it.

Once the application is complete, we usually make an appointment for an inspection. If we discover deficiencies during the inspection, we will send you an inspection report. The inspection report specifies what you must rectify. You normally have 2 weeks to reply.

We will decide whether or not to issue you with a permit.

If the Swedish Work Environment Authority decides not to issue you with a permit you may appeal.

  1. Appeal
    If we choose not to issue a permit, you may appeal the decision. Our notice will set out how you should do so. Set out why you consider that we should change our decision. Please send your appeal to the Swedish Work Environment Authority.

  2. We may change our previous decision
    The Swedish Work Environment Authority will reassess the application. If we decide to change our initial decision, we will notify you of this.

  3. If we do not change our previous decision, we will refer your appeal to a court of law
    If the Swedish Work Environment Authority stands by its first assessment not to grant a permit, we will refer your appeal to a court of law, namely the Administrative Court. We will also send your application and all other documents in your case.

  4. The court will take a decision
    The court will adopt a position on your appeal and take a decision. You will receive notice directly from the court.

Substances requiring a permit, group B

Substances that are included in group B may only be handled after you have been issued with a permit by the Swedish Work Environment Authority. This also applies to the substances’ salts and when the substance contains crystal water.

Substances that may only be handled with a permit by the Swedish Work Environment Authority
Carcinogenic substances CAS-nr*
p-Aminoazobensen 60-09-3
Auramin (4,4'-imidokarbonyl-bis(N,N-dimetylanilin)) 492-80-8
Bensalklorid 98-87-3
Bensotriklorid 98-07-7
ß-Butyrolakton 3068-88-0
4,4'-Diamino-3,3'-diklor-difenylmetan (MOCA,
2,4-Diamino-1-metoxibensen (2,4-Diaminoanisol) 615-05-4
2,4-Diaminotoluen 95-80-7
Dianisidin (3,3'-dimetoxibenzidin) 119-90-4
Diazometan 334-88-3
1,2:3,4-Diepoxibutan 1464-53-5
Dietylsulfat 64-67-5
3,3'-Diklorbenzidin 91-94-1
2,2'-Diklordietyleter 111-44-4
2,2'-Diklorodietylsulfid (senapsgas) 505-60-2
3,3'-Dimetylbenzidin (o-Tolidin) 119-93-7
1,1-Dimetylhydrazin 57-14-7
1,2-Dimetylhydrazin 540-73-8
Dimetylsulfat 77-78-1
Etylenimin 151-56-4
Etylmetansulfonat 62-50-0
Fenyl-ß-naftylamin 135-88-6
Metylmetansulfonat 66-27-3
Monometylhydrazin 60-34-4
α-Naftylamin 134-32-7
N-Nitrosodimetylamin (N,N-dimetylnitrosamin) 62-75-9
1,3-Propansulton 1120-71-4
ß-Propiolakton 57-57-8
1,2-Propylenimin 75-55-8
Tioacetamid 62-55-5
Tris(2,3-dibrompropyl)fosfat 126-72-7
Uretan (etylkarbamat) 51-79-6


Substances that may only be handled with a permit by the Swedish Work Environment Authority
Sensitizing substances CAS-nr
2,4-Diaminotoluen 95-80-7
3,3´-diklorbenzidin 91-94-1
pseudotioureadihydroklorid (PBA 1)
Hexahydroftalsyraanhydrid** 85-42-7
Hexahydroftalsyraanhydrid** 13149-00-3
Hexahydroftalsyraanhydrid** 14166-21-3
Metylhexahydroftalsyraanhydrid** 25550-51-0
Metylhexahydroftalsyraanhydrid** 19438-60-9
Metylhexahydroftalsyraanhydrid** 48122-14-1
Metylhexahydroftalsyraanhydrid** 57110-29-9
Metyltetrahydroftalsyraanhydrid** 26590-20-5
Metyltetrahydroftalsyraanhydrid** 11070-44-3
Metyltetrahydroftalsyraanhydrid** 34090-76-1
Metyltetrahydroftalsyraanhydrid** 1694-82-2
Metyltetrahydroftalsyraanhydrid** 3425-89-6
Metyltetrahydroftalsyraanhydrid** 5333-84-6
Metyltetrahydroftalsyraanhydrid** 42498-58-8
Tetrahydroftalsyraanhydrid** 85-43-8
Tetrahydroftalsyraanhydrid** 935-79-5
Tetraklorftalsyraanhydrid** 117-08-8


Substances that may only be handled with a permit by the Swedish Work Environment Authority
Substances toxic to reproduction CAS-nr
Etylentiourea 96-45-7

* CAS No is the identification number of the substance according to Chemical Abstract Service

** As a guidance value, 0.005 mg/m3 for the combined exposure to organic anhydrides during 15 minutes of inhalation should not be exceeded.

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Last updated 2022-09-22