Fracturing fluid system

EC₅₀, mg·L⁻¹

Toxicity level

Shimizu

1.0 × 10⁶

Non-toxic

Clean slippery water fracturing fluid

1.89 × 10⁶

Non-toxic

Oil-based emulsion slippery water fracturing fluid

1.06 × 10⁶

Non-toxic

Guar gum fracturing fluid

1.13 × 10³

Slightly toxic