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Rationale for the Development of a List of Regulated Substances Under CEPA Section 200 and their Threshold Quantities

Exhibit 5: Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists

Exhibit 5 - Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists
 Chemical
 1,2-Dichloroethane2- ChloroethanolAllyl chlorideCarbon monoxideChloropicrin
Physical stateLLLGL
Basis for CRAIM ThresholdExpert judgementExpert judgementExpert judgementExpert judgementExpert judgement
Level of Concern - ToxicityIDLH 1990 (gm/m3) 0.0330.9391.7250.027
IDLH 1994 (gm/m3)     
IDLH 1997 (gm/m3)     
ERPG-2 1991 (gm/m3)     
ERPG-2 2002 (gm/m3)0.810    
LC50 / 10 (gm/m3)     
LCLO / 10 (gm/m3)     
Mol wt99.080.576.528.0164.4
Boiling T (°C)83128.745-191.7112
V0.0980.0760.0921.0000.125
IDLH Index8.2940.43610.2081.7250.240
CRAIM TQ, Tonnes (lbs)50 (110,000)1.0 (2,200)1.0 (2,200)4.5 (10,000)0.7 (1,540)
New TQ, Tonnes (lbs)6.8 (15,000)4.5 (10,000)9.10 (20,000)6.8 (15,000)2.27 (5,000)
CommentDecrease TQ to 6,8 t (15,000 lbs) based on ERPG-2 (2002) Raise TQ to 4.5 t (10,000 lbs) based on IDLH (1990)Raise TQ to 9.1 t (20,000 lbs) based on IDLH (1990)Raise TQ to 6.8 t (15,000 lbs) based on IDLH (1990)Raise TQ to 2.27 t (5,000 lbs) based on IDLH (1990)

Physical States :

  • L = liquid
  • G = gas
  • S = solid


Exhibit 5
Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists (continued)
 Chemical
 Chlorosulfonic acidCyanogen bromideHydrobromic acidKeteneMercury
Physical stateLLGGL
Basis for CRAIM ThresholdExpert judgementExpert judgementExpert judgementExpert judgementExpert judgement
Level of Concern - ToxicityIDLH 1990 (gm/m3)    0.028
IDLH 1994 (gm/m3)  0.09930.0094 
IDLH 1997 (gm/m3)     
ERPG-2 1991 (gm/m3)0.0111    
ERPG-2 2002 (gm/m3)     
LC50 / 10 (gm/m3)     
LCLO / 10 (gm/m3) 0.03982   
Mol wt116.5105.980.942200.6
Boiling T (°C)15262-66.7-56.1356.7
V0.0910.1091.0001.0000.089
IDLH Index0.1210.3660.0990.0090.316
CRAIM TQ, Tonnes (lbs)1.0 (2,200)1.0 (2,200)2.27 (5,000)0.05 (110)1.0 (2,200)
New TQ, Tonnes (lbs)2.27 (5,000)4.5 (10,000)1.13 (2,500)0.22 (500)4.5 (10,000)
CommentRaise TQ to 2.27 t (5,000 lbs) based on ERPG-2 (1991)Raise TQ to 4.5 t (10,000 lbs) based on chemical repository 13 LCLO (92 ppm) divided by 10Decrease TQ to 1.13 t (2,500 lbs) based on IDLH (1994)Raise TQ to 0.22 t (500 lbs) based on IDLH (1994)Raise TQ to 4.5 t (10,000 lbs) based on IDLH (1990)

Notes:

  • 1 ERPG-2 (1991)
  • 2 LCLO 10 min NTP Chemical Repositry 13 Aug. 2001 divided by 10
  • 3 IDLH (1994)
  • 4 IDLH (1994)

Physical States :

  • L = liquid
  • G = gas
  • S = solid


Exhibit 5
Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists (continued)
 Chemical
 Methacrolein (Metha-crylaldehyde)Methacryloyloxyethyl isocyanateMethyl bromideMethyl iodideMethyl vinyl ketone
Physical stateLLGLL
Basis for CRAIM ThresholdExpert judgementExpert judgementExpert judgementExpert judgementExpert judgement
Level of Concern - ToxicityIDLH 1990 (gm/m3)N.AN.A7.7804.640N.A.
IDLH 1994 (gm/m3)     
IDLH 1997 (gm/m3)     
ERPG-2 1991 (gm/m3)     
ERPG-2 2002 (gm/m3)     
LC50 / 10 (gm/m3)     
LCLO / 10 (gm/m3)     
Mol wt70.1155.295.0141.970.1
Boiling T (°C)682113.3342.880
V0.0810.0951.0000.1400.077
IDLH IndexN.A.N.A.7.78033.112N.A.
CRAIM TQ, Tonnes (lbs)N.A.N.A.1.143.4 (7,500)N.A.
New TQ, Tonnes (lbs)N.A.N.A.6.8 (15,000)9.10 (20,000)N.A.
CommentRemoved based on CRAIM Board decision;
Essentially not in Canadian Commerce
Removed based on CRAIM Board decision;
Essentially not in Canadian Commerce
Raise TQ to 6.8 t (15,000 lbs) based on IDLH90Raise TQ to 4.5 t (10,000 lbs) based on IDLH90Removed based on CRAIM Board decision;
Essentially not in Canadian Commerce

Physical States :

  • L = liquid
  • G = gas
  • S = solid


Exhibit 5 - Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists (continued)
 Chemical
 Nitrogen dioxideOsmium tetroxidesPhenolStibineTetraethyl lead
Physical stateGSLGL
Basis for CRAIM ThresholdExpert judgementExpert judgementExpert judgementExpert judgementExpert judgement
Level of Concern - ToxicityIDLH 1990 (gm/m3)0.0940.0010.9630.2040.040
IDLH 1994 (gm/m3)     
IDLH 1997 (gm/m3)     
ERPG-2 1991 (gm/m3     
ERPG-2 2002 (gm/m3)     
LC50 / 10 (gm/m3)     
LCLO / 10 (gm/m3)     
Mol wt46254.294.1124.8323.4
Boiling T (°C)21.1130181.7-18.3108.9
V1.0001.0000.0741.0000.197
IDLH Index0.0940.00113.0230.2040.226
CRAIM TQ, Tonnes (lbs)0.1 (220)0.05 (110)4.5 (10,000)0.22 (500)1.0 (2,200)
New TQ, Tonnes (lbs)1.13 (2,500)0.22 (500)9.10 (20,000)2.27 (5,000)2.27 (5,000)
CommentRaise TQ to 1.13 t (2,500 lbs) based on IDLH (1990)Raise TQ to 0.22 t (500 lbs) based on IDLH (1990)Raise TQ to 9.1 t (20,000 lbs) based on IDLH (1990)Raise TQ to 2.27 t (5,000 lbs) based on IDLH (1990)Raise TQ to 2.27 t (5,000 lbs) based on IDLH (1990)

Physical States :

  • L = liquid
  • G = gas
  • S = solid


Exhibit 5 - Threshold Calculation for Toxic Substances in CRAIM List Originating from MIACC Lists (continued)
 Chemical
 Thionyl chlorideTrioxychlorofluoride
Physical stateLG
Basis for CRAIM ThresholdExpert judgementExpert judgement
Level of Concern - ToxicityIDLH 1990 (gm/m3)  
IDLH 1994 (gm/m3)  
IDLH 1997 (gm/m3) 0.4196
ERPG-2 1991 (gm/m3)  
ERPG-2 2002 (gm/m3)  
LC50 / 10 (gm/m3)0.2445 
LCLO / 10 (gm/m3)  
Mol wt119.0102.5
Boiling T (°C)76.1-46.7
V0.1131.000
IDLH Index2.1610.419
CRAIM TQ, Tonnes (lbs)0.1 (220)2.2 (5,000)
New TQ, Tonnes (lbs)6.8 (15,000)6.8 (15,000)
CommentRaise TQ to 6.8 t (15,000 lbs) based on RETC LC50 1 hour (500 ppm) divided by 10Raise TQ to 6.8 t (15,000 lbs) based on IDLH (1990)

Notes:

  • 5 LC50 1 h (500 ppm) RETC July 2000 divided by 10
  • 6 IDLH (1997)

Physical States :

  • L = liquid
  • G = gas
  • S = solid