United Nations Environment Programme
   Ozone Secretariat

1

Hexachlorobutadiene (or HCBD)

C₄Cl₆

0.07

87-68-3

Solvent applications as well as an intermediate in the production of HFCs.

2

n-propyl bromide (or 1-bromopropane, CH₂BrCH₂CH₃ and nPB)

1-C₃H₇Br or CH₂BrCH₂CH₃

0.0033-0.111

106-94-5

Solvent applications, including degreasing, vapour cleaning and cold cleaning of metal parts

3

1,1,1-trichloro-2,2,2-trifluoroethane (or R.113a)

CFC-113a

0.65

354-58-5

an agrochemical intermediate and manufacture of synthetic pyrethoids

4

6-bromo-2-methoxynaphtalene (or bromo-methoxy-naphtalene or BMN)

C₁₀H₆BrOCH₃

511165-9

Solvent Applications

5

Halon-1202 (or dibromodifluoromethane, difluorodibromomethane, Freon 12-B2, R12B2 or UN1941)

CBr₂ F₂

Best Estimate: 1.25

75-61-6

In fire protection systems for military-type aircraft. By-product which may be generated during production of Halon 1301 and 1211.

6

1-bromo-3-chloropropane

CH₂ClBr or
C₃H₆BrCl

Guess - 0.05 109-70-6 Pharmaceutical industry.

-59

142 Albemarle PPC SA, Fermion 10-5,000 tonnes 1990-1992 France

7 Dibromomethane CH₂Br₂ 74-95-3 Formed during the production of bromochloromethane (BCM) as a by-product in a quantity of about 20 % of BCM. Used in the production of two insecticides.

-52

96 Eurobrom BV, Albemarle SA, Cheminova Agro A/S 100-500 tonnes per company from 1991-1993 The Netherlands, Belgium, Denmark

8 Bromochloroethane C₂H₄BrCl 107-04-0 Was used for soil fumigation. It is produced as a by-product of 1,2-dichloroethane. 1,1 Bromochloroethane: no information available.

9

131 Not known Not known Not known

9 Dibromoethane C₂H₄Br₂ 106-93-4 Not known

-63

108 Not known Not known Not known

10 Bromoethane C₂H₅Br 74-96-4 Used as starting material in the production of various chemicals.

-199

38 Albermarle PPC SA, Atofina, Great Lakes Chem (EU or USA), BASF 10-500 tonnes per year, 1990-1993 France, United Kingdom, Germany

11 1,3-Dibromopropane C₃H₆Br₂ 109-64-8 Synthesis of the fungicide pyracarbolid, various pharmaceuticals and polyamines.

-34

167 Atofina 10-50 tonnes in 1993 France

12 2-Bromopropane C₃H₇Br 75-26-3 Formed as a by-product (0,1 – 0,2 %) of n-propylbromide.

-89

60 Albermarle PPC SA, Atofina, Gt Lakes Chemical (Europe), Reidel-de Hein 10-500 tonnes per year, 1990-1993 France, United Kingdom, Germany

13 C4Cl4F6
2,2,3,3-Tetrachloro
hexafluorobutane CClF2CClF
CClFCClF2 375-34-8 As Flon-S-316, a substitute for CFC-113

?

? Asahi Not known Japan, USA