MSDS Writer, L.L.C

MSDS Writer, L.L.C

The need to communicate hazards of chemicals to users is of the utmost importance. The widespread use of chemicals, the development of new chemicals, and the need to re-evaluate the hazards of pre-existing chemicals contribute to the importance of SDS Compliance. In the United States, the Occupational Safety and Health Administration (OSHA) has created the Hazard Communication Standard (HCS) to mandate the use of a Safety Data Sheet (SDS) and provide information to people who use, handle or store hazardous industrial chemicals. The SDS is used to convey the details on a material`s identity, manufacturer information, hazard identity, emergency information, instructions on what to do if a hazardous situation has occurred, information on the prevention of hazardous situations, as well as other technical information. Recognizing the importance of this document, many other countries (e.g. the EU, Australia, Canada) have adopted the HCS into their own chemical safety initiatives.

Company details

7701 Karlov Ave. , Skokie , IL 60076 USA
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Business Type:
Service provider
Industry Type:
Hazardous Substances
Market Focus:
Globally (various continents)

With an online presence established in 1998, MSDSWriter began as a small shop dedicated to freelance authoring of Safety Data Sheets. Initially attracting mostly 'mom and pop' type clients, MSDSWriter quickly emerged as one of only a handful of companies present on the Internet focused on delivering hazard communication solutions.

Our specialized offerings have occupied a niche that caters to clients of all sizes and our business has rapidly grown to include them. They hail from broad sectors of manufacturing worldwide including for example, construction, mining, boutique chemical, and cosmetic firms.

Our capacity has grown along with our client base (we are not quite Fortune 500 yet but we dream big). Now at the heart of MSDSWriter is a team of project managers and contractors focused on delivering quality work while keeping operating costs as low as possible.

The secret to our success has been timely customer correspondence and a 'no-frills' approach to our work. That is to say, our clients know that they only pay for what they need: our expertise and commitment to quality work--not flashy graphics or expensive programs when they are not always needed. We focus on producing work that is simply compliant and backed by years of focus on the MSDS and the world of Hazard Communication.

Interested in working with MSDSWriter? Check out our career opportunities and affiliate programs.

We thank you for considering MSDSWriter and look forward to partnering with you to promote a safe and compliant work environment.

A Safety Data Sheet (SDS) is used by chemical manufacturers and importers to convey both the physical hazards (pH, flashpoint, flammability, etc.) and also the health hazards (carcinogenicity, teratogenicity, etc.) of their chemicals to the end user

  • SDSs are a critical component of the United States Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard
    • This standard (29 CFR 1910.1200(g)) mandates that workers have a right to know what hazards are associated with the chemicals they use in the workplace 
  • Both manufacturers of chemicals and employers with chemicals in their workplace, must be in compliance with this regulation
    • It is the most often cited violation by OSHA, with fines of more than $70,000 per violation per instance.

When creating your SDS, you will need to gather and provide some of the items from the list below, depending on your specific needs and/or requirements. Furthermore, the OSHA SDS format has the following required categories that must be on every SDS:

Section 1, Identification;

(a) Product identifier used on the label;
(b) Other means of identification;
(c) Recommended use of the chemical and restrictions on use;
(d) Name, address, and telephone number of the chemical manufacturer, importer, or other responsible
(e) Emergency phone number.

Section 2, Hazard(s) identification;

(a) Classification of the chemical
(b) Signal word, hazard statement(s), symbol(s) and precautionary statement(s). (Hazard symbols may be provided as graphical reproductions in black and white or the name of the symbol, e.g., flame, skull and crossbones);
(c) Describe any hazards not otherwise classified that have been identified during the classification
(d) Where an ingredient with unknown acute toxicity is used in a mixture at a concentration
≥1% and the mixture is not classified based on testing of the mixture as a whole, a statement
that X% of the mixture consists of ingredient(s) of unknown acute toxicity is required.

Section 3, Composition/information on ingredients;

For Substances
(a) Chemical name;
(b) Common name and synonyms;
(c) CAS number and other unique identifiers;
(d) Impurities and stabilizing additives which are themselves classified and which contribute to
the classification of the substance.

For Mixtures
In addition to the information required for substances:
(a) The chemical name and concentration (exact percentage) or concentration ranges of all ingredients
which are classified as health hazards in accordance with paragraph (d) of
§ 1910.1200 and
(1) Are present above their cut-off/concentration limits; or
(2) Present a health risk below the cut-off/concentration limits.
(b) The concentration (exact percentage) shall be specified unless a trade secret claim is
made in accordance with paragraph (i) of § 1910.1200, when there is batch-to-batch variability
in the production of a mixture, or for a group of substantially similar mixtures (See
A. with similar chemical composition. In these cases, concentration ranges may be

For All Chemicals Where a Trade Secret is Claimed
Where a trade secret is claimed in accordance with paragraph (i) of § 1910.1200, a statement
that the specific chemical identity and/or exact percentage (concentration) of composition
has been withheld as a trade secret is required.

(Note: you will need to provide this when authoring with us);

Section 4, First-aid measures;

(a) Description of necessary measures, subdivided according to the different routes of exposure,
i.e., inhalation, skin and eye contact, and ingestion;
(b) Most important symptoms/effects, acute and delayed.
(c) Indication of immediate medical attention and special treatment needed, if necessary.

Section 5, Fire-fighting measures;

(a) Suitable (and unsuitable) extinguishing media.
(b) Specific hazards arising from the chemical (e.g., nature of any hazardous combustion products).
(c) Special protective equipment and precautions for fire-fighters.

Section 6, Accidental release measures;

(a) Personal precautions, protective equipment, and emergency procedures.
(b) Methods and materials for containment and cleaning up.

Section 7, Handling and storage;

(a) Precautions for safe handling.
(b) Conditions for safe storage, including any incompatibilities.

Section 8, Exposure controls/personal protection;

(a) OSHA permissible exposure limit (PEL), American Conference of Governmental Industrial
Hygienists (ACGIH) Threshold Limit Value (TLV), and any other exposure limit used or recommended
by the chemical manufacturer, importer, or employer preparing the safety data
sheet, where available.
(b) Appropriate engineering controls.
(c) Individual protection measures, such as personal protective equipment.

Section 9, Physical and chemical properties;

(a) Appearance (physical state, color, etc.);
(b) Odor;
(c) Odor threshold;
(d) pH;
(e) Melting point/freezing point;
(f) Initial boiling point and boiling range;
(g) Flash point;
(h) Evaporation rate;
(i) Flammability (solid, gas);
(j) Upper/lower flammability or explosive limits;
(k) Vapor pressure;
(l) Vapor density;
(m) Relative density;
(n) Solubility(ies);
(o) Partition coefficient: n-octanol/water;
(p) Auto-ignition temperature;
(q) Decomposition temperature;
(r) Viscosity; 

(Note: If you have tested your product, there are minimum physical/chemical properties needed to author);

Section 10, Stability and reactivity;

(a) Reactivity;
(b) Chemical stability;
(c) Possibility of hazardous reactions;
(d) Conditions to avoid (e.g., static discharge, shock, or vibration);
(e) Incompatible materials;
(f) Hazardous decomposition products.

Section 11, Toxicological information;

Description of the various toxicological (health) effects and the available data used to identify
those effects, including:
(a) Information on the likely routes of exposure (inhalation, ingestion, skin and eye contact);
(b) Symptoms related to the physical, chemical and toxicological characteristics;
(c) Delayed and immediate effects and also chronic effects from short- and long-term exposure;
(d) Numerical measures of toxicity (such as acute toxicity estimates).
(e) Whether the hazardous chemical is listed in the National Toxicology Program (NTP) Report
on Carcinogens (latest edition) or has been found to be a potential carcinogen in the International
Agency for Research on Cancer (IARC) Monographs (latest edition), or by OSHA.

Note 1: To be consistent with the GHS, an SDS must also include the following headings in this order:

Section 12, Ecological information;

(a) Ecotoxicity (aquatic and terrestrial, where available);
(b) Persistence and degradability;
(c) Bioaccumulative potential;
(d) Mobility in soil;
(e) Other adverse effects (such as hazardous to the ozone layer).

Section 13, Disposal considerations;

Description of waste residues and information on their safe handling and methods of disposal,
including the disposal of any contaminated packaging.

Section 14, Transport information;

(a) UN number;
(b) UN proper shipping name;
(c) Transport hazard class(es);
(d) Packing group, if applicable;
(e) Environmental hazards (e.g., Marine pollutant (Yes/No));
(f) Transport in bulk (according to Annex II of MARPOL 73/78 and the IBC Code);
(g) Special precautions which a user needs to be aware of, or needs to comply with, in connection
with transport or conveyance either within or outside their premises. 

Section 15, Regulatory information;

Safety, health and environmental regulations specific for the product in question.

Note 2: OSHA will not be enforcing information requirements in sections 12 through 15, as these areas are not under its jurisdiction.

Section 16, Other information, including date of preparation or last revision.

The Current SDS Landscape

The path to a compliant Safety Data Sheet (SDS) or its international equivalents is still a confusing one even for experienced safety professionals. The current SDS landscape has only recently codified standards for what makes a document compliant and varies from one country to the next. The aim of the UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS), first published in 2003, was to facilitate regional and worldwide trade through consistent rules and regulations.  

As manufacturers begin the transition to the GHS you should be aware that an SDS you come across might be outdated - because the manufacturer changed the product without updating the SDS, or the current regulations have changed. Asking the manufacturer to provide a copy of their most recent SDS will suffice if you are simply looking for more information on the product. However, for sophisticated or complex SDS needs, the lack of standardization or a thorough SDS presents a real barrier to conducting business. Incomplete or outdated SDSs could result in stiff fines and a dangerous work setting.

Resources and Options

Professional resources are available to manage SDS needs. Large scale companies can manage a huge internal library of standardized SDSs using database software. Their internal safety professionals may author the SDSs themselves, or rely on SDS authoring software. However, database and authoring software, training staff and remaining current on updates is often cost-prohibitive. Safety professionals and compliance departments for large companies often seek a way to outsource their current SDS operation to a skilled outsider such as MSDSWriter.

The MSDSWriter Solution

MSDSWriter provides the flexibility of budget-friendly and personalized SDS authoring services. Large companies consider outsourcing or developing their SDS program using the staff at MSDSWriter. Others simply choose to rely on MSDSWriter to deliver their SDSs on an 'as-needed' basis. Whatever their choice, MSDSWriter helps companies avoid busting their limited budgets of time and money on just their SDS needs. It also helps avoid risking their business on existing and potentially incomplete SDSs.


Since 1998, MSDSWriter has offered authoring services designed to meet our clients’ needs for affordable regulatory compliance solutions.

We specifically pride ourselves on employing these four main principles:

  • Authoring with the Highest Possible Quality - our highly-skilled experts only author compliant SDSs that adhere to regulatory standards across our clients’ fields
  • Focus on Timeliness - industry leading response times and flexible turnaround windows to meet our clients’ timeframes
  • Deliver with Competitive Pricing - providing high value solutions with best-in-class rates, substantially lower than software-driven or internal authoring alternatives
  • Provide a Global Perspective - representing clients across the world, with translation services in numerous languages

Solution Examples

Example 1: A client scenario driven by timeliness would involve a 24-hour turnaround on SDS authoring, where only the names of the components are provided and the SDS needed to be translated into another language and/or compliant under non-U.S. regulations.

Example 2: A scenario at the other end of the spectrum, would be an SDS request for completion in 10 business days, requiring little intervention on MSDSWriter's part other than handling and processing data you give us, using software you designate, and delivering the finished product. MSDSWriter in this example would serve as more of an SDS technician essentially providing you a low cost administrative apparatus for efficient and accurate SDS generation.

Whatever your needs, rest assured that we will work with you to find a cost-effective solution to your specific SDS needs.

Contact us to find out how MSDSWriter can help you.



The MSDSWriter team specializes in researching, authoring and updating OSHA compliant SDSs and their international equivalents. Since 1998, we have offered a suite of Hazcom services designed to meet Corporate needs for affordable regulatory compliance solutions. The hallmarks of our service include quality, innovation, timeliness and, most importantly, service.


  • SDS Format & Country
    • We author in compliance with GHS safety data sheet requirements implemented on a country-specific basis. 
  • Product Information
    • At a minimum, you will need to provide your full formula information with ingredients including:
      • Chemical Abstract Service (CAS) Numbers 
      • Percentage of each summing up to 100% in the product
      • Ingredient SDS or MSDSs 
    • Physical/Chemical properties of your mixture
      • GHS classification is dependent on certain hazards inherent in the product. Laboratory testing to determine pH, flash point and boiling point is strongly recommended. 
  • Timing
    • Standard turnaround time is 7-10 business days.
    • If you have a specific time constraint, contact us now for expedited, 24-hour authoring.



Once we've agreed on pricing, deliverables, and time lines, your compliance expert will author your SDS.



You will be notified when your SDS is ready to be downloaded from the client portal. Simply submit payment through the secured payment center in the portal and your project will be immediately released for your review.


MSDSWriter will protect any client-disclosed information. Contact us for non-disclosure (NDA) terms if needed.