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Table 1 Risk of severe acute methanol toxicity in eight at-risk alcohol-based hand rubs (ABHRs) relative to the ingested volumes

From: The danger of the toxicity and inefficacy of alcohol-based hand rubs in Iran during COVID-19: a cross-sectional study

Ethanol concentration of ABHR (v/v%)*¶

Methanol concentration of ABHR (mg/L)†

Methanol serum concentration (mg/L)$ if ingested (If weight = 75 Kg/ 40 L body water) between 1–2 h of a definitive volume

100 mL

200 mL

400 mL

600 mL

800 mL

1000 mL

22

280,150

700.38

1400.75

2801.50

4202.25

5603.00

7003.75

26

284,264

710.66

1421.32

2842.64

4263.96

5685.28

7106.60

1.8

343,292

858.23

1716.46

3432.92

5149.38

6865.84

8582.30

2.2

433,728

1084.32

2168.64

4337.28

6505.92

8674.56

10843.20

1

443,260

1108.15

2216.30

4432.60

6648.90

8865.20

11081.50

1

543,276

1358.19

2716.38

5432.76

8149.14

10865.52

13581.90

2.1

669,126

1672.82

3345.63

6691.26

10036.89

13382.52

16728.15

1.9

680,100

1700.25

3400.50

6801.00

10201.50

13602.00

17002.50

  1. *Each 1% v/v is equal to 10,000 mg/L
  2. ¶The minimum effective concentration of ethanol is 60% v/v
  3. †The maximum permitted concentration of methanol is 630 mg/L (FDA temporary policy) OK
  4. $ the commonly quoted toxic threshold is serum concentration 200 mg/L