Product Identification

Product Name

1,1'-Dimethyl-4,4'-bipyridinium dimethosulfate

Synonyms

1',1'-Dimethyl-4,4'-dipyridiniumbisi(methyl sulfate)
1-Methyl-4-(1-methylpyridin-1-ium-4-yl)pyridin-1-ium methyl sulfate
4,4'-Bipyridinium, 1,1'-dimethyl-, bis(methyl sulfate)
Gramoxone methyl sulfate
Paraquat bis(methyl sulfate)

CAS

2074-50-2

Formula

C14H20N2O8S2

Molecular Weight

297.36

EINECS

218-196-3

RTECS

DW2010000

RTECS Class

Agricultural Chemical and Pesticide

Beilstein/Gmelin

5844061

EC Index Number

613-090-00-7

EC Class

Very toxic; Toxic; Irritant; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White crystalline solid or yellow solid.

Usage

Herbicide.

First Aid Measures

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Skin

Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

See inhalation.

Inhalation

It can cause death by shock and/or pulmonary damage. The fatal dose is estimated to be 6 grams of paraquat ion. Exposure may cause renal tubular damage and liver dysfunction.

Skin

See inhalation.

Eyes

See inhalation

Hazards

When heated to decomposition, it emits very toxic fumes of sulfur oxides and nitrogen oxides. Avoid strong oxidizers.

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Fire Fighting Measures

Fire Fighting

(Non-Specific -- Pesticide, Solid, n.o.s.) Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing. Move container from fire area if you can do so without risk.Not combustible. (Non-Specific -- Pesticide, Solid, n.o.s.) Extinguish with dry chemical, carbon dioxide, water spray, fog, or foam.

Accidental Release Measures

Small spills/leaks

(Non-Specific -- Pesticide, Solid, n.o.s.) Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Do not touch spilled material; stop leak if you can do so without risk. Small spills: absorb with sand or other noncombustible absorbent material and place into containers for later disposal. Small dry spills: with clean shovel place material into clean, dry container and cover; move containers from spill area. Large spills: dike far ahead of spill for later disposal.

Stability and Reactivity

Stability

No data.