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Sodium Tripolyphosphate Light Density STPP

SoapGoods Inc
Price in points: 195 points
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Sodium Tripolyphosphate Light Density STPP, Safety Data Sheet


Normally used in commercial detergents. Highly charged chelating agent. STPP is widely used in regular and compact laundry detergents and automatic dishwashing detergents (in powder, liquid, gel and/or tablet form), toilet cleaners, surface cleaners, and coffee urn cleaners.

It also provides a number of chemical functions including: sequestration of "water hardness", enabling surfactants to function effectively; pH buffering; dirt emulsification and prevention of deposition; hydrolysis of grease; and dissolving-dispersing dirt particles.


Other Names: Pentasodium triphosphate, Sodium triphosphate, STPP
CAS: 7758-29-4
Appearance: Fine white granules
Solubility: Water Soluble
Natural or Synthetic: Synthetic
Recommended Retest or Shelf Life: 2 Years
Storage: Cool Dark Place
Purity: 94% by weight


Not for Ingestion.

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How Fast Can I get it?

We Guarantee Your order ships out the same or next business day! This means in the South East you will have your order in 1 to 3 business days, in the North East normally 3 to 4 days and in the West normally 4 to 5 days. For full details on shipping and processing times please see our expected delivery times.

These times are based on business days, not including weekends or holidays.

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USPS Delivery Map

USPS Transit Times

Typical Delivery Times to Major US Cities

Major Cities Total Business Days +1 / -1
Alabama (AL) - Montgomery, Birmingham 1
Alaska (AK) - Juneau, Anchorage 7
Arizona (AZ) - Phoenix, Tucson 4
Arkansas (AR) - Little Rock, Fayetteville 2
California (CA) - Sacramento, Los Angeles, San Francisco, San Diego, Sacramento, San Jose 4
Colorado (CO) - Denver, Colorado Springs 3
Connecticut (CT) - Hartford, New Haven 2
Delaware (DE) - Dover, Wilmington, Newark 2
Florida (FL) - Tallahassee, Orlando, Miami, Jacksonville, Tampa, Destin 2
Georgia (GA) - Atlanta, Savannah, Augusta, Athens 1
Hawaii (HI) - Honolulu, Kailua 7
Idaho (ID) - Boise, Coeur d'Alene 4
Illinois (IL) - Springfield, Chicago, Peoria, Rockford 2
Indiana (IN) - Indianapolis, Fort Wayne 2
Iowa (IA) - Des Moines, Cedar Rapids 2
Kansas (KS) - Topeka, Wichita, Kansas City 2
Kentucky (KY) - Frankfort, Louisville, Lexington 2
Louisiana (LA) - Baton Rouge, New Orleans, Lafayette 2
Maine (ME) - Augusta, Portland, Bangor 3
Maryland (MD) - Annapolis, Baltimore 2
Massachusetts (MA) - Boston, Cambridge, Worcester 2
Michigan (MI) - Lansing, Detroit, Grand Rapids 2
Minnesota (MN) - St. Paul, Minneapolis, Duluth 3
Mississippi (MS) - Jackson, Biloxi, Hattiesburg 1
Missouri (MO) - Jefferson City, St Louis, Kansas City 2
Montana (MT) - Helena, Billings 4
Nebraska (NE) - Lincoln, Omaha 2
Nevada (NV) - Carson City, Las Vegas, Reno 4
New Hampshire (NH) - Concord, Manchester, Portsmouth 2
New Jersey (NJ) - Trenton, Newark, Jersey City 2
New Mexico (NM) - Santa Fe, Alburquerque 3
New York (NY) - Albany, New York, Rochester, Buffalo, Albany, Syracuse, Niagara Falls, Ithaca 3
North Carolina (NC) - Raleigh, Charlotte 2
North Dakota (ND) - Bismarck, Fargo 3
Ohio (OH) - Columbus, Cleveland, Cincinnati 2
Oklahoma (OK) - Oklahoma City, Fairview, 2
Oregon (OR) - Salem, Portland, Eugene 5
Pennsylvania (PA) - Harrisburg, Philadelphia, Pittsburgh 2
Rhode Island (RI) - Providence, Newport 2
South Carolina (SC) - Columbia, Charleston 1
South Dakota (SD) - Pierre, Sioux Falls, Rapid City 3
Tennessee (TN) - Nashville, Memphis 2
Texas (TX) - Austin, Houston, Dallas 3
Utah (UT) - Salt Lake City, St. George 3
Vermont (VT) - Montpelier, Burlington 3
Virginia (VA) - Richmond, Virginia Beach 2
Washington (WA) - Olympia, Seattle, Vancouver, Spokane 5
West Virginia (WV) - Charleston, Morgantown 2
Wisconsin (WI) - Madison, Milwaukee 2
Wyoming (WY) - Cheyenne, Jackson 4

How Does this Ship?

Our ingredients are normally shipped out in strong, re-closeable plastic bags, the larger sizes (50 lbs size and multiples of 50 Lb) are shipped in strong paper / plastic industrial strength bags typically used for 50 lb chemicals. In some cases, depending on stock levels, we might use multiple bags to fulfill an order, for example, 16 lbs might be 4 x 4 lbs rather than a single 16 lb bag. If the packaging size is a concern please contact us and we will be happy to work with you.

My well water is not only hard with heavy mineral content, but it’s also alkaline. As a result, soap won’t even dissolve in it.

My new stainless steel dishwasher was developing a hard crust of dried on soap deposits and the dishes not only were coated a white mineral deposit but were coming out of the dishwasher dirtier than before they went in!

The mesh filter in the washer was completely blocked with soap and mineral deposits after every load.

Detergent boosters and vinegar were useless in this situation.

My laundry had similar problems. Clothes came out smelling and dirty. Grease wouldn’t dissolve.

I battled this for more than a year before I finally found out the issue was phosphates had been removed from detergents in consumer products.

This product has been a godsend to me. 1 teaspoon added to my dish washer in every load and my dishes are clean again. The white mineral buildup is gone. With every use my glassware comes back to life and that soap buildup in my dishwasher is gone!

Two teaspoons added to every load of laundry and now my clothes are clean, they smell good, and even greasy stains are removed.

Thank you for making this product available!!!
It definitely works just like the old days when Cascade had the proper amount of phosphate in it. I add about 1/2 teaspoon to the main detergenet compartment along with a Finish tablet. I don't even use rinse aid anymore. It's that good. I know I sound like a commercial, but it's true. I suffered for years after phosphates were removed from dishwasher detergent.
Used this for a couple of weeks. Glasses are looking clearer. Wine glasses don't have the white film. Thanks
An excellent dishwasher soap booster: add 1/2 tsp to both pre and main wash soap dispensers in addition to regular soap. Leaves dishes squeaky clean.
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Safety Data Sheet (Sodium-Tripolyphosphate-Light-Density-STPP.pdf, 113 Kb) [Download]