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BIT

Benzisothiazolinone (BIT) is a widely used biocide and belongs to the group of isothiazolinones. Benzisothiazolinone has a microbicide and a fungicide mode of action. It is used as
a preservative in emulsion paints, varnishes, adhesives, washing agents, fuels and in the papermaking process. In paints, it is commonly used as a mixture with methylisothiazolinone.

Benzisothiazolinone (BIT) is a widely used biocide and belongs to the group of isothiazolinones.

Usage
Benzisothiazolinone has a microbicide and a fungicide mode of action. It is widely used as a preservative, for example in:

emulsion paints, caulks, varnishes, adhesives, inks, and photographic processing solutions
home cleaning and car care products; laundry detergents, stain removers and fabric softeners;
industrial settings, for example in textile spin-finish solutions, leather processing solutions, preservation of fresh animal hides and skins
agriculture in pesticide formulations
gas and oil drilling in muds and packer fluids preservation.
In paints, it is commonly used alone or as a mixture with methylisothiazolinone. Typical concentrations in products are 200–400 ppm depending on the application
area and the combination with other biocides. According to a study in Switzerland, 19% of the paints, varnishes and coatings contained BIT in 2000. The fraction in adhesives,
sealants, plasters and fillers was shown at that time as 25%. A later study in 2014 shows a dramatic rise in usage, to 95.8% of house paints.

Given sufficient dose and duration, dermal exposure can produce skin sensitization and allergic contact dermatitis,and is classified as an irritant for skin and eyes.
Benzisothiazolinone has also been linked with Systemic Contact Dermatitis via airborne contact.

In 2012, the Scientific Committee on Consumer Safety in Europe found BIT's "sensitising potential is of concern...Sensitisation from related isothiazolinones is an important problem
in consumers. This has occurred because there has been consumer exposure before safe levels of exposure relevant to sensitisation have been established. Benzisothiazolinone is a skin
sensitiser in animal models with potency similar to methylisothiazolinone. Methylisothiazolinone, at 100 ppm (0.01%) in cosmetic products is causing contact allergy and allergic contact
dermatitis in the consumer. Benzisothiazolinone is known to be a sensitiser in man and has induced sensitisation at circa 20 ppm in gloves."

The opinion further states: "There is no information on what may be safe levels of exposure to benzisothiazolinone in cosmetic products from the point of view of sensitisation.
Until safe levels of exposure have been established, the use of benzisothiazolinone in cosmetic products as a preservative or for other functions cannot be considered safe in relation
to sensitisation.

IUPAC name
1,2-benzisothiazol-3(2H)-one
Other names
Benzisothiazolinone, Benzisothiazolin-3-one, Benzisothiazolone
CAS Number: 2634-33-5
Abbreviations: BIT, bit, bit 20, BIT 20
1,2-benzisothiazolin-3-one
1,2-benzisothiazoline-3-one
benzisothiazolinone
benzisothiazolone
Proxel
1,2-Benzisothiazol-3(2H)-one
2634-33-5
1,2-Benzisothiazolin-3-one
1,2-benzothiazol-3-one
benzisothiazolone
benzisothiazolinone
Benzo[d]isothiazol-3(2H)-one
Benzo[d]isothiazol-3-one
Proxel
1,2-Benzisothiazoline-3-one
Proxel PL
Benzo[d]isothiazol-3-ol
2,3-dihydro-1,2-benzothiazol-3-one
1,2-benzisothiazolinone
Nipacide BIT
Proxel AB
Proxel XL 2
1,2-BENZISOTHIAZOL-3-ONE
benzoisothiazol-3-one
1,2-benzoisothiazolin-3-one
1,2-Benzisothiazolone
C7H5NOS
CCRIS 6369
3-Hydroxy-1,2-benzisothiazole
IPX
CHEBI:167099
EINECS 220-120-9
HRA0F1A4R3
1,2-Benzoisothiazoline-3-one
40991-37-5
2,3-dihydro-3-oxo-1,2-benzisothiazole
Benzo(d)isothiazol-3(2H)-one
Benzisothiazolin-3-one
Benzocil
Acticide BIT
Canguard BIT
Denicide BIT
Proxel BD
Proxel CF
Proxel TN
Proxel XL
Proxel BDN
Proxel GXL
Proxel Ultra 5
San-aibac AP
Proxel LV-S
Proxel Press Paste
Apizas AP-DS
Acticide BW 20
Bestcide 200K
Nipacide BIT 20
Parmetol B 70
Parmetol D 11
Proxel GXL(S)
Proxel HL 2
Nuosept 485
Nuosept 491
Nuosept 495
Topcide 600
XBINX
Denicide BIT 20N
Koralone B 119
Nipacide BIT 10W
Preventol BIT 20D
Proxel BD 20
Proxel Press Paste D
Troysan 1050
Bioban BIT 20DPG
1,2-benzisothiazole-3(2h)-one
benzisothiazoline-3-one
Canguard BIT 20DPG
SD 202 (bactericide)
Canguard Ultra BIT 20LE
1,2-Benzoisothiazol-3-one
BIT 10W
BIT 20
2-Thiobenzimide
2,3-Dihydrobenzisothiazol-3-one
1,2-Benzothiazolinone
Benzisothiazolone (BIT)
Benzisothiazol-3(2H)-one
1,2-benzothiazol-3(2h)-one
1,2-benzisothiazol-3(2H)-on
1,2-BIT
1,2-Benzisothiazol-3-one (BIT)
1,2-BENZISOTHAZOL-3(2H)-ONE
1,2-Benzisothiazol-3(2H)-one, 97%
CAS-2634-33-5
1,2-Benzisothiazol-3(2H)-one, analytical standard
75037-67-1
1,2-Benzisothiazol-3(2H)-one
1,2-Benzisothiazolin-3-one
1,2-Benzisothiazoline-3-one
2,3-dihydro-3-oxo-1,2-benzisothiazole
benzisothiazolone
BIT
IPX
BIT
IPX
1,2-Benzisothiazol-3(2H)-one
1,2-Benzisothiazoline-3-one
benzisothiazolone
1,2-Benzisothiazolin-3-one
2,3-dihydro-3-oxo-1,2-benzisothia
1,2-Benzisothiazol-3(2H)-one [ACD/Index Name]
1,2-Benzisothiazol-3-ol [ACD/Index Name]
1,2-Benzothiazol-3(2H)-on [German] [ACD/IUPAC Name]
1,2-Benzothiazol-3(2H)-one [ACD/IUPAC Name]
1,2-Benzothiazol-3(2H)-one [French] [ACD/IUPAC Name]
1,2-Benzothiazol-3-ol [German] [ACD/IUPAC Name]
1,2-Benzothiazol-3-ol [ACD/IUPAC Name]
1,2-Benzothiazol-3-ol [French] [ACD/IUPAC Name]
220-120-9 [EINECS]
2634-33-5 [RN]
BENZISOTHIAZOLINONE
Benzisothiazolone [Wiki]
Benzisothiazolone (BIT)
benzo[d]isothiazol-3-one
[2634-33-5]
1,2-BENZISOTHAZOL-3(2H)-ONE
1,2-Benzisothiazol-3-one
1,2-Benzisothiazolin-3-one
1,2-Benzisothiazolinone
1,2-Benzisothiazolone
1,2-benzoisothiazolin-3-one
1,2-Benzoisothiazoline-3-one
1,2-Benzothiazol-3-one
1,2-Benzothiazolinone
119510
2,3-dihydro-1,2-benzothiazol-3-one
2,3-dihydro-3-oxo-1,2-benzisothiazole
'2634-33-5
2-hydrobenzo[d]isothiazol-3-one
2-Thiobenzimide
3-Hydroxy-1,2-benzisothiazole
54392-15-3 [RN]
75037-67-1 [RN]
9015-68-3 [RN]
Acticide BIT
Benzisothiazol-3(2H)-one
BENZISOTHIAZOLINONE|"1,2-BENZOTHIAZOL-3-OL"
Benzo(D) Isothiazol-3-one
benzo[d]isothiazol-3(2H)-one
Benzo[d]isothiazol-3-ol
Benzoisothiazol-3-one
Benzoisothiazol-3-one|1,2-Benzisothiazol-3(2H)-one|3-Hydroxy-1,2-benzisothiazole
BIT
BR-46705
EINECS 220-120-9
IPX
Nipacide BIT
proxan
Proxel
Proxel AB
Proxel PL
Proxel XL 2
IUPAC name
2,3-dihydro-1,2-benzothiazol-3-one
IUPAC Traditional name
1,2-benzisothiazol-3(2H)-one
Synonyms
Benzisothiazolin-3-one
Benzisothiazolone
Benzisothiazolinone
1,2-benzisothiazoline-3-one

1, 2-Benzisothiazol-3(2H)-one, also known as benzisothiazolone or proxel, belongs to the class of organic compounds known as benzothiazoles. These are organic compounds containing
a benzene fused to a thiazole ring (a five-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom). 1, 2-Benzisothiazol-3(2H)-one exists as a solid, slightly
soluble (in water), and a very weakly acidic compound (based on its pKa). Within the cell, 1, 2-benzisothiazol-3(2H)-one is primarily located in the cytoplasm.
1, 2-Benzisothiazol-3(2H)-one is a potentially toxic compound.

Benzo[d]isothiazol-3-one is an organic heterobicyclic compound based on a fused 1,2-thiazole and benzene bicyclic ring skeleton, with the S atom positioned adjacent to one of the positions of ring fusion.
It has a role as a disinfectant, a platelet aggregation inhibitor, an environmental contaminant, a xenobiotic, a drug allergen and a sensitiser. It is an organonitrogen heterocyclic
compound and an organic heterobicyclic compound.

Benzisothiazolinone has a microbicide and a fungicide mode of action. It is used as a preservative in emulsion paints, varnishes, adhesives, washing agents, fuels and in the papermaking
process. In paints, it is commonly used as a mixture with methylisothiazolinone. Typical concentrations in products are 200–400 ppm depending on the application area and the combination
with other biocides. According to a study in Switzerland, 19% of the paints, varnishes and coatings contained BIT in 2000. The fraction in adhesives, sealants, plasters and fillers
was 25%