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Chemical Datasheet

SODIUM PHOSPHATE, TRIBASIC

8 - Corrosive material
Chemical Identifiers | Hazards | Response Recommendations | Physical Properties | Regulatory Information | Alternate Chemical Names

Chemical Identifiers

CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.

UN/NA Number - The United Nations-North America number (also called UN number or DOT number). 4-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. This numbering system was developed by the U.S. Department of Transportation, and then became the UN standard system for classifying hazardous materials.

DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.

CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.

NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and instability hazards, along with special hazards such as water- and air-reactivity. See a guide to the NFPA diamond.

General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.

List of data sources.
CAS Number UN/NA Number DOT Hazard Label CHRIS Code
  • 10101-89-0
  • 7601-54-9
  • 10361-89-4
  • 7758-29-4
  • 7785-84-4
  • 10124-56-8
  • Corrosive
NFPA 704
data unavailable
General Description
A colorless to white crystalline solid. Noncombustible.

Hazards

Reactivity Alerts - Special alerts if the chemical is especially reactive (see list of reactivity alerts).

Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.

Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).

Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).

Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).

Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.

Potentially Incompatible Absorbents - Absorbents are products that can be used to soak up liquids from spills. However, some absorbents can react with particular chemicals (that is, they are incompatible), so caution should be used in selecting the correct absorbent for your situation. This section provides a list of potentially incompatible absorbents that have been known to react with liquids assigned to one or more of the reactive groups listed on this datasheet. Read more about absorbents, including situations to watch out for.

List of data sources.
Reactivity Alerts
none
Air & Water Reactions
Water soluble.
Fire Hazard
Behavior in Fire: At fire temperature decomposes to emit highly toxic and irritating phosphorus oxides. (USCG, 1999)
Health Hazard
INHALATION: Will produce local irritation in the respiratory tract. A burning sensation in the nose and throat, as well as coughing (and in high concentrations, choking) may be noted. May cause lung irritation. EYES: Immediate and severe pain followed by conjuctival edema and corneal clouding. Cataracts may form. SKIN: Immediate local reactions, including reddening, itching and irritation, followed by loss of surface layers of the skin. INGESTION: Severe tissue damage to all portions of the gastrointestinal tract. Symptoms include pain and burning wherever contact is made. Nausea, vomiting, cramps, and diarrhea may occur. Tissue corrosion and ulceration may result if untreated. (USCG, 1999)
Reactivity Profile
SODIUM PHOSPHATE, [TRIBASIC] corrodes aluminum and zinc [Handling Chemicals Safely 1980 p. 947]. Reacts when heated above about 84°C with aqueous solutions of reducing sugars other than sucrose, to evolve toxic levels of carbon monoxide [Bretherick, 5th Ed., 1995].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

Response Recommendations

Isolation and Evacuation - Isolation and evacuation distance recommendations from the Emergency Response Guidebook (ERG).

Firefighting - Response recommendations if the chemical is on fire (or near a fire).

Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).

Protective Clothing - Recommendations for protective gear.

Dupont Tychem® Suit Fabrics - A table of normalized breakthrough times for DuPont Tychem suit fabrics for the chemical, if available.

First Aid - Recommended first aid treatment for people exposed to the chemical.

List of data sources.
Isolation and Evacuation
Excerpt from GUIDE 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2012)
Firefighting
Excerpt from GUIDE 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2012)
Non-Fire Response
Excerpt from GUIDE 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2012)
Protective Clothing
Rubber gloves and boots, safety goggles or face mask, hooded suit, and respirator with approved canister, or a self-contained breathing apparatus. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Get medical aid.

INHALATION: Remove from exposure. If needed, give artificial respiration.

EYES: Wash with running water for 15 min. Continue irrigation for additional 15 min. if physician is (USCG, 1999)

Physical Properties

This section contains physical properties, flammability limits, and toxic thresholds for this chemical (see definitions of each property). More property data is available for common chemicals.

See also the Levels of Concern guide for information on AEGLs, ERPGs, PACs, and IDLH values.

List of data sources.
Chemical Formula:
  • H3O4P.12H2O.3Na
  • H3O4P.3Na
  • H3O4P.10H2O.3Na
  • H5O10P3.5Na
  • H3O9P3.3Na
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 170.06 ° F (USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.62 at 68.0 ° F (Hydrate) 2.52 anhydrous (USCG, 1999)
Boiling Point: The hydrate loses 11 moles of water at 212° F. (USCG, 1999)
Molecular Weight: 163.95 (anhydrous); 380.16 (Hydrate, 12H 2 O) (USCG, 1999)
Water Solubility: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Sodium phosphate, tribasic, dodecahydrate (10101-89-0) 22 mg/m3 240 mg/m3 1500 mg/m3
Sodium phosphate, tribasic; (Trisodium phosphate) (7601-54-9) 5 mg/m3 250 mg/m3 1500 mg/m3
Sodium tripolyphosphate (7758-29-4) 0.22 mg/m3 2.5 mg/m3 620 mg/m3
Sodium phosphate, tribasic; (Sodium trimetaphosphate) (7785-84-4) 22 mg/m3 240 mg/m3 1400 mg/m3
Sodium phosphate, tribasic; (Sodium hexametaphosphate; Calgon) (10124-56-8) 19 mg/m3 200 mg/m3 1200 mg/m3
(SCAPA, 2012)

Regulatory Information

This section contains regulatory information from the Title III Consolidated List of Lists (see details about each regulatory field).

List of data sources.
Regulatory Name CAS Number/
313 Category Code
EPCRA 302
EHS TPQ
EPCRA 304
EHS RQ
CERCLA RQ EPCRA 313
TRI
RCRA
Code
CAA 112(r)
RMP TQ
Potassium bromate 7758-29-4 313
Sodium arsenate 7601-54-9 1000/10000 1 1 313c
Sodium phosphate, tribasic 10101-89-0 5000
Sodium phosphate, tribasic 10361-89-4 5000
Sodium phosphate, tribasic 7758-29-4 5000

(EPA List of Lists, 2012)

Alternate Chemical Names

This section provides a listing of alternate names for this chemical, including trade names and synonyms.