H2SO4 storage tanks · molded in Willis, TexasMon–Fri · 936-228-1520
HDPE · cone bottom
Closed-top HDPE cone bottom tanks drain completely through the bottom outlet, so no acid is left behind when you empty the tank.
12 HDPE cone bottom tanks from 325 to 10,000 gallons, priced from $529 to $21,227. Available in 1.9 SG rating and light blue and translucent white.
| 10,000 Gallon HDPE Cone Bottom Tank - 15 Degree 1.9 SG | 10,000 | 173" Height x 142" Diameter 14 ft 5 in H × 11 ft 10 in dia. | 1.9 | Light Blue | 2,330 lbs | $21,227.00 |
| 7,500 Gallon HDPE Cone Bottom Tank - 30 Deg. 1.9 SG | 7,500 | 149" Height x 141" Diameter 12 ft 5 in H × 11 ft 9 in dia. | 1.9 | Light Blue | 1,555 lbs | $17,210.00 |
| 6,000 Gallon HDPE Cone Bottom Tank 15 Deg 1.9 SG | 6,000 | 195" Height x 102" Diameter 16 ft 3 in H × 8 ft 6 in dia. | 1.9 | Light Blue | 1,480 lbs | $13,412.00 |
| 5,500 Gallon HDPE Cone Bottom Tank 30 Deg 1.9 SG 119 in. | 5,500 | 148" Height x 119" Diameter 12 ft 4 in H × 9 ft 11 in dia. | 1.9 | Light Blue | 1,355 lbs | $13,013.00 |
| 4,950 Gallon HDPE Cone Bottom Tank 15 Deg 1.9 SG 102 in. | 4,950 | 159" Height x 102" Diameter 13 ft 3 in H × 8 ft 6 in dia. | 1.9 | Light Blue | 1,096 lbs | $8,113.00 |
| 3,000 Gallon HDPE Cone Bottom Tank - 15 Degree 1.9 SG | 3,000 | 120" Height x 91" Diameter 10 ft H × 7 ft 7 in dia. | 1.9 | Light Blue | 530 lbs | $4,970.00 |
| 2,000 Gallon HDPE Flat Top Cone Bottom Tank 1.9 SG | 2,000 | 101" Height x 80" Diameter 8 ft 5 in H × 6 ft 8 in dia. | 1.9 | Translucent White | 440 lbs | $2,099.00 |
| 1,720 Gallon HDPE Cone Bottom Tank - 15 Deg. 1.9 SG 91 in. | 1,720 | 78" Height x 91" Diameter 6 ft 6 in H × 7 ft 7 in dia. | 1.9 | Light Blue | $2,422.00 | |
| 1,320 Gallon HDPE Cone Bottom Tank - 15 Deg. 1.9 SG 91 in. | 1,320 | 64" Height x 91" Diameter 5 ft 4 in H × 7 ft 7 in dia. | 1.9 | Light Blue | $2,214.00 | |
| 1,020 Gallon HDPE Cone Bottom Tank - 15 Deg. 1.9 SG 91 in. | 1,020 | 53" Height x 91" Diameter 4 ft 5 in H × 7 ft 7 in dia. | 1.9 | Light Blue | 198 lbs | $1,844.00 |
| 1,000 Gallon HDPE Closed Top Cone Bottom Tank 1.9 SG | 1,000 | 92" Height x 70" Diameter 7 ft 8 in H × 5 ft 10 in dia. | 1.9 | Translucent White | 275 lbs | $1,399.00 |
| 325 Gallon HDPE Cone Bottom Tank - 45 Degree 1.9 SG | 325 | 68" Height x 42" Diameter 5 ft 8 in H × 3 ft 6 in dia. | 1.9 | Translucent White | 100 lbs | $529.00 |
SG (specific gravity) is the heaviest liquid a tank is built to hold. Water is 1.0, so a 1.9 SG tank is made for liquids up to 1.9 times as heavy as water. Choose an SG rating at or above the specific gravity of your liquid.
Why this tank
Every tank on this page is rated 1.9 or 2.2 specific gravity. Concentrated sulfuric acid weighs about 1.84 times as much as water, so lighter-duty tanks are left off this list.
Concentrated acid is heavy, about 15 lb per gallon. We list only tanks rated 1.9 SG or 2.2 SG; choose 2.2 SG for extra wall thickness.
HDPE is rated Excellent for sulfuric acid up to 75% and Good from 75% to 93%. See the ratings.
The cone bottom empties fully through the outlet, ideal for batches and slurries.
HDPE tanks we mold use linear HDPE: Dow RESILITY™ DPDB-3220 NT 7 or a comparable linear HDPE resin. In ExxonMobil testing in 97% acid, linear HDPE held its strength while crosslinked polyethylene turned brittle. See the study.
We install fittings and Viton® gaskets suited to your concentration. No welded flanges in the sidewall for sulfuric acid. See fittings.
Concentration guide
Ratings from our chemical compatibility database. Temperature and impurities matter too, so confirm your application with us.
| Concentration | HDPE tank | Viton® gasket | EPDM gasket |
|---|---|---|---|
| 1% – 10% | Excellent | Excellent | Excellent |
| 10% – 75% | Excellent | Excellent | Good |
| 75% – 93% | Good | Excellent | Good |
| Above 93% | Not in our database. Contact us before storing 93–98% acid. | ||
See the full sulfuric acid compatibility chart, our sulfuric acid storage guide and the tank installation guide. Sulfuric acid properties: PubChem CID 1118.
More options
FAQ
Choose a tank rated at or above the specific gravity of your acid. Concentrated sulfuric acid (96–98%) has a specific gravity of about 1.84, so a 1.9 SG tank is the minimum and 2.2 SG adds wall thickness and margin. Dilute acid weighs less, but we list only 1.9 and 2.2 SG tanks for sulfuric acid service.
HDPE is rated Excellent for sulfuric acid up to 75% and Good from 75% to 93%. For acid above 93%, contact us before ordering.
We strongly recommend it. The sealed outer wall captures a leak from the inner tank and keeps fumes from spilled acid contained, which a separate containment dike cannot do.
Viton® is rated Excellent at every concentration from 1% to 93%. EPDM is Excellent below 10% and Good above. Buna-N drops to Fair above 75%. We specify gaskets to match your concentration.
Dilute sulfuric acid attacks most metals and can release hydrogen gas, according to PubChem. HDPE, polypropylene and PVDF tanks are not attacked by the acid concentrations they are rated for.
Tanks used for sulfuric acid carry a limited one-year warranty from the date of manufacture, instead of our standard three-year tank warranty. Fittings we install carry a one-year warranty from installation. See warranty terms.
An ExxonMobil Chemical study found that crosslinked polyethylene became brittle within about 1,000 hours in 97% sulfuric acid, while linear HDPE kept most of its impact strength and elongation through 4,000 hours. HDPE tanks molded by Bailiff are linear HDPE, made from Dow RESILITY™ DPDB-3220 NT 7 or a comparable linear HDPE resin. Read the summary. A copy of the full study is available from Bailiff by email request: dmiller@plasticstoragetanks.com.
Send the acid concentration, temperature, volume and fittings you need. We’ll match the resin, SG rating and gaskets and send a quote.