SAFETY DATA SHEET
Hypophosphorous Acid
SECTION 1 - PRODUCT AND COMPANY IDENTIFICATION
SDS Number:
Effective Date: 02/25/2015
Product Name:
Hypophosphorous Acid, 50%
Synonyms:
Phosphinic acid
HPA
Product Code:
SMC Spec. 605
Recommended Use:
Chemical processing.
Restrictions on Use:
None Identified
Company Identification:
Special Materials Company
th
70 West 40 Street
New York, New York 10018
Phone:
Fax:
CHEMTREC (emergency):
(646) 366-0400
(646) 366-0595
800-424-9300
Outside USA:
Supersedes: 08/29/2011
(703) 527-3887
SECTION 2 – HAZARDS IDENTIFICATION
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
Skin corrosion (Category 1B)
Serious eye damage (Category 1)
GHS Label elements
Signal word: Danger
Hazard statement(s)
H314 - Causes severe skin burns and eye damage.
H318 - Causes serious eye damage
Precautionary statement(s)
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P264 Wash thoroughly after handling.
P280 - Wear protective gloves and eye/face protection.
P301+P330+P331 - IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 - IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with
water/shower.
P305+P351+P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if
present and easy to do. Continue rinsing.
P304+P340 - IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P310 - Immediately call a POISON CENTRE or doctor/physician.
P405 Store locked up.
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SAFETY DATA SHEET
Hypophosphorous Acid
S56 - Dispose of this material and its container to hazardous or special waste collection point.
Hazard Pictograms
Other Hazards:
Other hazards which do not result in classification:
Burning produces obnoxious and toxic fumes. Contact with metals liberates hydrogen gas. Heating may cause
acid to concentrate, resulting in a thermally unstable solution. In extreme cases, tooth erosion could result.
Environmental precautions: Avoid release to the environment.
PBT assessment: This preparation contains no substance considered to be persistent, bio accumulating nor toxic
(PBT).
SECTION 3 – COMPOSITION / INFORMATION ON INGREDIENTS
CAS#
%
(by weight)
Phosphinic Acid
6303-21-5
50.0 – 52.0
Not established
Not established
Water
7732-18-5
48.0 – 50.0
Not hazardous
Not hazardous
HAZARDOUS COMPONENTS
OSHA PEL
3
PPM
MG/M
ACGIH TWA
3
PPM
MG/M
SARA
TITLE III
RQ
LBS
__
__
__
__
SECTION 4 – FIRST AID MEASURES
Most Important Symptoms/Effects (acute, delayed): Causes severe burns. In extreme cases, tooth erosion could result.
Special Treatment: Immediate medical attention is required.
Inhalation:
Immediately remove person to fresh air. If breathing is irregular or stopped, administer artificial respiration.
Call a physician or poison control center immediately.
Skin: IF ON SKIN (or hair): Remove/take off immediately all contaminated clothing. Rinse immediately with plenty of water
and seek medical advice. Wash contaminated clothing before reuse.
Eyes: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue
rinsing. Call a physician or poison control center immediately.
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SAFETY DATA SHEET
Hypophosphorous Acid
Ingestion: Do NOT induce vomiting. Rinse mouth. Give small amounts of water to drink. Never give anything by mouth to
an unconscious person. Call a physician or poison control center immediately.
SECTION 5 – FIRE FIGHTING MEASURES
General fire hazards:
Extinguishing media
Suitable extinguishing media: Carbon dioxide (CO2); Dry chemical; Foam; Water spray.
Unsuitable extinguishing media: None known. .
Special hazards arising from
the substance or mixture: Heating may cause acid to concentrate, resulting in a thermally unstable solution. The pressure in
sealed containers can increase under the influence of heat. In the event of fire the following can be released: Phosphine;
Phosphorus compounds. Dike for water control. Decomposes at 190°C with the release of spontaneously flammable phosphine.
Advice for firefighters
Special firefighting procedures: Move containers from fire area if safe to do so. Cool closed containers exposed to fire with
water spray. Do not allow run-off from firefighting to enter drains or water courses. Contact with B:C extinguishing powder can
release large amounts of carbon dioxide.
Special protective
equipment for fire-fighters: Wear self-contained breathing apparatus and protective suit. Fight fire with normal precautions
from a reasonable distance.
.
SECTION 6 – ACCIDENTAL RELEASE MEASURES
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED:
Personal precautions
Wear chemically resistant personal protective equipment during cleanup. Wear protective gloves/clothing and eye/face
protection. Keep people away from and upwind of spill/leak. Corrosive!
Environmental precautions
Do not allow material to contaminate ground water system.
If necessary, dike well ahead of the spill to prevent runoff into drains, sewers, or any natural waterway or drinking supply.
Methods and materials for containment and cleaning up
Ventilate the area. Remove all sources of ignition. Prevent further leakage or spillage if safe to do so.
Soak up with inert absorbent material (e.g. sand, silica gel, acid binder, universal binder, sawdust).
Pick up and transfer to properly labelled containers. Contact the proper local authorities.
Clean contaminated floors and objects thoroughly while observing environmental regulations.
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SAFETY DATA SHEET
Hypophosphorous Acid
SECTION 7 – HANDLING AND STORAGE
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORAGE:
Precautions for safe handling
Use only in well-ventilated areas. Wear chemically resistant protective equipment during handling. Wear protective gloves
and eye/face protection. Avoid contact with skin, eyes and clothing. Do not breathe vapors or spray mist. Keep away from
heat and sources of ignition.
Avoid strong oxidizers. Keep containers closed when not in use.
Wash thoroughly after handling.
Conditions for safe storage, including any incompatibilities
Store in cool/well-ventilated place. Keep away from heat. Inspect periodically for damage or leaks. Protect against physical
damage. Store away from incompatible materials. Storage area should be clearly identified, clear of obstruction and
accessible only to trained and authorized personnel. Keep out of the reach of children.
SECTION 8 – EXPOSURE CONTROLS / PERSONAL PROTECTION
ENGINEERING CONTROLS (exposure or biological limits values)
Use only in well-ventilated areas. Apply technical measures to comply with the occupational exposure limits. Where reasonably
practicable this should be achieved by the use of local exhaust ventilation and good general extraction. In case of insufficient
ventilation wear suitable respiratory equipment.
RESPIRATORY PROTECTION (SPECIFY TYPE):
Respirators may be used when engineering and work practice controls are not technically feasible, or when they fail and need
to be supplemented. The filter class for the respirator must be suitable for the maximum expected contaminant concentration
(gas/vapor/aerosol/particulates) that may arise when handling the product. If this concentration is exceeded, self-contained
breathing apparatus must be used. The type of respiratory protection will depend on the conditions of use (see also EN 149).
PROTECTIVE GLOVES:
Wear protective gloves. The suitability for a specific workplace should be discussed with the producers of the protective gloves.
EYE PROTECTION:
Wear eye/face protection. Wear as appropriate: Tightly fitting safety goggles; Face-shield.
OTHER PROTECTIVE CLOTHING OR EQUIPMENT:
Where extensive exposure to product is possible, use resistant coveralls, apron and boots to prevent contact. Ensure
that eyewash stations and safety showers are close to the workstation location.
WORK / HYGIENIC PRACTICES:
Do not breathe vapors or spray mist. Avoid contact with skin, eyes and clothing. Do not eat, drink or smoke when using this
product. Wash thoroughly after handling. Remove and wash contaminated clothing before re-use. Handle in accordance with
good industrial hygiene and safety practice.
SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES
Appearance:
Odor:
Odor threshold:
pH:
Melting point/freezing point:
Liquid; Colorless.
None
Not available
1.0
- 25°C
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SAFETY DATA SHEET
Hypophosphorous Acid
Initial boiling point
and boiling range:
Flash point:
Evaporation rate:
Flammability (solid, gas):
Upper/lower flammability
or explosive limits:
Vapor pressure:
Vapor density:
Relative density:
Solubility (water):
Partition coefficientn-octanol/water:
Auto-ignition
Temperature:
108°C
Not applicable
Not available
Not applicable
Not applicable
19 mmHg @ 25°C
Not available
1.21 - 1.27 @ 25°C
Completely soluble
Not available
190°C (apparent auto-ignition because it decomposes with the release of spontaneously
flammable phosphine.)
Decomposition temperature: 190°C (decomposes with the release of spontaneously flammable phosphine.)
Viscosity:
8.0 centipoise @ 20°C
SECTION 10 – STABILITY AND REACTIVITY
Reactivity
Not normally reactive.
Chemical stability
Stable under normal conditions. Heating may cause acid to concentrate, resulting in a thermally unstable solution. Decomposes
at 190°C with the release of spontaneously flammable phosphine.
Possibility of hazardous reactions
Gives off hydrogen by reaction with metals.
Conditions to avoid (e.g. static discharge, shock or vibration)
Direct sources of heat. Incompatible products.
Incompatible materials
Strong oxidizers such as calcium hypochlorite (pool chlorine), Bases, Metals.
Hazardous decomposition products
In the event of fire the following can be released: Phosphine; Phosphorus compounds.
SECTION 11 – TOXICOLOGICAL INFORMATION
Acute toxicity
LD50 Oral (water):
> 90.0 mg / kg, rat
LD50 Dermal:
No data available
LC50 Inhalation:
No data available
Skin corrosion/irritation
Skin – rabbit:
No data available
Serious eye damage/eye irritation
Eyes – rabbit:
No data available
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SAFETY DATA SHEET
Hypophosphorous Acid
Respiratory or
skin sensitization:
Germ cell mutagenicity:
Reproductive toxicity:
Specific target organ
toxicity - single exposure:
Specific target organ toxicity
- repeated exposure:
Aspiration hazard:
No data available
No data available
No data available.
No data available.
No data available.
No data available
Carcinogenicity
No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed
human carcinogen by IARC.
Routes of exposure
Eye contact; Skin contact; Ingestion; Inhalation.
Effects of acute exposure
Inhalation: Corrosive to the respiratory tract. Symptoms may include coughing, choking and wheezing. Inhalation of
extremely high concentrations could cause pulmonary edema (fluid accumulation). Symptoms of pulmonary edema (chest pain,
shortness of breath) may be delayed.
Skin contact: Causes severe skin burns.
Eye contact: Causes serious eye damage. May cause blindness.
Potential Chronic Health Effects
Ingestion: May cause severe irritation and corrosive damage in the mouth, throat and stomach. Harmful if swallowed.
In extreme cases, tooth erosion could result. Chronic skin contact with low concentrations may cause dermatitis.
Other important hazards
None known or reported by the manufacturer. Signs and Symptoms of Exposure
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
SECTION 12 – ECOLOGICAL INFORMATION
Toxicity
Toxicity to fish:
Rainbow trout - LC50 (96 h): > 100 mg/L
Toxicity to aquatic invertebrates: Daphnia magna - EC50 (48 h): > 100 mg/L
Toxicity to algae:
Desmodesmus subspicatus (algae) static EC50 (72 h): > 160 mg/L
Persistence and degradability
No data available
Bio accumulative potential
Mobility in soil
Results of PBT and
vPvB assessment
No data available
No data available
Other adverse effects
This material is an inorganic substance therefore the PBT assessment is not
applicable.
No data available
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SAFETY DATA SHEET
Hypophosphorous Acid
SECTION 13 – DISPOSAL CONSIDERATIONS
WASTE DISPOSAL METHOD: Dispose of in accordance with Local, State, and Federal Regulations. Refer to "40 CFR
Protection of Environment Parts 260 - 2 99" for complete waste disposal regulations. Consult your local, state, or Federal
Environmental Protection Agency before disposing of any chemicals. Do not flush to sanitary sewer or waterway.
SECTION 14 – TRANSPORT INFORMATION
Proper Shipping Name: Corrosive liquid, acidic, inorganic, n.o.s. (Hypophosphorous acid)
DOT Hazard Class / Pack Group:
8 / II
IATA Hazard Class / Pack Group: 8 / II
Reference: 49 CFR 173.154, .202, .242
IMDG Hazard Class: 8 / II
UN/NA Identification Number: UN 3264
RID/ADR Dangerous Goods Code: 8
Label: Corrosive
UN TDG Class / Pack Group: 8 / II
Hazard Symbols: C
Hazard Identification Number (HIN): 80
Special precautions: None
Note: Transportation information provided is for reference only. Client is urged to consult CFR 49 parts 100 - 177,
IMDG, IATA, EC, United Nations TDG, and WHMIS (Canada) TDG information manuals for detailed regulations and
exceptions covering specific container sizes, packaging materials and methods of shipping.
SECTION 15 – REGULATORY INFORMATION
TSCA Toxic Substance Control Act)
All components of this product are listed on the U.S. Toxic Substances Control Act Chemical Inventory (TSCA Inventory)
or are exempted from listing because a Low Volume Exemption has been granted in accordance with 40 CFR 723.50.
SARA Title III (311,312)
311/312 Hazard Categories.
Immediate Health.
313 reportable Ingredients: None
CERCLA Hazardous Substance
None
California Prop 65, Safe Drinking Water and Toxic Enforcement Act of 1986
There are no chemicals present known to the state of California to cause cancer or reproductive toxicity.
CPR (Canadian Controlled Products Regulations)
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the
SDS contains all the information required by the Controlled Products Regulations. WHMIS Classification: E
IDL (Canadian Ingredient Disclosure List)
Components of this product identified by CAS number and listed on the Canadian Ingredient Disclosure List are shown in
Section 3.
DSL / NDSL (Canadian Domestic Substances List / Non-Domestic Substances List)
Hypophosphorous Acid is listed on the DSL.
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SAFETY DATA SHEET
Hypophosphorous Acid
EINECS (European Inventory of Existing Commercial Chemical Substances)
Components of this product identified by CAS numbers are on the European Inventory of Existing Commercial Chemical
Substances.
SECTION 16 – OTHER INFORMATION
Specific toxicity tests have not been conducted on this product. Our hazard evaluation is based on Information from
similar products, the ingredients, technical literature, and/or professional experience.
HMIS HAZARD RATINGS
Health
Flammability
Physical Hazard
3
0
0
Personal Protective Equipment:
*= Chronic Health Hazard
0= Insignificant
1= Slight
2= Moderate
3= High
4= Extreme
J - Splash Goggles, Gloves, Apron, Respirator
Revision Summary:
This SDS has been revised in the following sections: 1 – 16 (in accordance with 29 CFR 1910.1200 (OSHA HCS)
SDS Prepared by:
Special Materials Company
th
70 West 40 Street
New York, New York 10018
Tel.: 646-366-0400
www.smc-global.com
The information contained herein is believed to be accurate but is not warranted to be so. Data and calculations are based on information
furnished by the manufacturer of the product and manufacturers of the components of the product. Users are advised to confirm in advance
of need that information is current, applicable and suited to the circumstances of use. Vendor assumes no responsibility for injury to vendee
or third persons proximately caused by the material if reasonable safety procedures are not adhered to as stipulated in the data sheet.
Furthermore, vendor assumes no responsibility for injury caused by abnormal use of this material even if reason able safety procedures are
followed. Any questions regarding this product should be directed to the manufacturer of the product as described in Section 1.
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