Potassium dithionite

Metals -> Hydrosulfites

Flammable agents - 3rd degree

Potassium dithionite appears as a light yellow colored powdered or flaked solid. Used to make dyes and other chemicals.

Light yellow solid; [CAMEO]

Water-reactive material (WR)

Water-reactive material (WR)

Potassium hydrosulphite: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:

· Flammable/combustible material.

· Flammable/combustible material.

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:

· Fire will produce irritating, corrosive and/or toxic gases.

· Fire will produce irritating, corrosive and/or toxic gases.

1929 135

1929 135

POTASSIUM DITHIONITE reacts, often violently, with oxidizing agents to generate heat and gaseous products that may be toxic and flammable. Generates gaseous sulfur dioxide in contact with oxidizing acids and nonoxidizing acids. Undergoes a self-accelerating hydrolysis reaction upon contact with water, producing thiosulfate and bisulfite compounds and heat in neutral or acidic aqueous solution.

If ... THERE IS NO FIRE, go directly to the Table of Initial Isolation and Protective Action Distances /(see table below)/ ... to obtain initial isolation and protective action distances. IF THERE IS A FIRE, or IF A FIRE IS INVOLVED, go directly to the appropriate guide /(see guide(s) below)/ and use the evacuation information shown under PUBLIC SAFETY. /Potassium dithionite (when spilled in water)/

Table of Water-Reactive Materials Which Produce Toxic Gases

/GUIDE 135: SUBSTANCES - SPONTANEOUSLY COMBUSTIBLE/ Fire or Explosion: Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.

/GUIDE 135: SUBSTANCES - SPONTANEOUSLY COMBUSTIBLE/ Health: Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.

For more DOT Emergency Guidelines (Complete) data for Potassium dithionite (10 total), please visit the HSDB record page.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:

General First Aid:

General First Aid:

· Wear positive pressure self-contained breathing apparatus (SCBA).

· Wear positive pressure self-contained breathing apparatus (SCBA).

TIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Do not use water. Use graphite, soda ash, powdered sodium chloride, or suitable dry powder.

If fire becomes uncontrollable or container is exposed to direct flame, consider evacuation of one-half (1/2) mile radius. If material leaking (not on fire) consider evacuation from downwind area based on amount of material spilled, location, and weather conditions.

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal and plant life; and conformance with environmental and public health regulations.

If material not on fire and not involved in fire: Do not use water. Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Keep material dry.

Avoid breathing vapors. Keep upwind ... Avoid bodily contact with the material.

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:

Immediate precautionary measure

When spilled in water

When spilled in water

Immediate precautionary measure

When spilled in water

H2S SO2 - when spill Potassium hydrosulfite into water.

H2S SO2 - when spill Potassium hydrosulfite into water.

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:

Wear positive pressure self-contained breating apparatus ... Wear appropriate chemical protective clothing. Do not handle broken packages unless wearing appropriate personal protective equipment.

· DO NOT USE WATER, CO2 OR FOAM ON MATERIAL ITSELF.

· DO NOT USE WATER, CO2 OR FOAM ON MATERIAL ITSELF.

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Sulfur and related compounds/

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Administer activated charcoal ... . Cover skin burns with dry sterile dressings after decontamination ... . /Sulfur and related compounds/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasms ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Sulfur and related compounds/

Used to make dyes and other chemicals; [CAMEO]

Toxic Gas from Spilling Chemical in Water [Category: Other]

Used to make dyes and other chemicals